Dosage Form
Tablet
Route
ORAL
About This Medication
11 DESCRIPTION Darunavir is an inhibitor of the human immunodeficiency virus (HIV-1) protease. Darunavir tablets contain the active ingredient darunavir which has the following chemical name: [(1S,2R)-3-[[(4-aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]-carbamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester. Its molecular formula is C 27 H 37 N 3 O 7 S and its molecular weight is 547.67. Darunavir has the following structural formula: Darunavir is a white to creamish with pink tint powder. It is freely soluble in acetonitrile, insoluble in water. Darunavir tablets are for oral administration and contain following inactive ingredients: colloidal silicon dioxide, hydroxypropyl cellulose, hypromellose, magnesium stearate, microcrystalline cellulose, sodium starch glycolate, talc and titanium dioxide. Additionally, each 600 mg and 800 mg tablet contains ferrosoferric oxide, iron oxide red and iron oxide yellow. All strengths for darunavir are expressed in terms of the free form of darunavir. Image
Active Ingredients
| Ingredient |
Strength |
| Darunavir |
- |
Indications & Usage
1 INDICATIONS AND USAGE Darunavir, co-administered with ritonavir (darunavir/ritonavir), in combination with other antiretroviral agents, is indicated for the treatment of human immunodeficiency virus (HIV-1) infection in adult and pediatric patients 3 years of age and older [see Use in Specific Populations ( 8.4 ) and Clinical Studies ( 14 )]. Darunavir is a human immunodeficiency virus (HIV-1) protease inhibitor indicated for the treatment of HIV-1 infection in adult and pediatric patients 3 years of age and older. Darunavir must be co-administered with ritonavir (darunavir/ritonavir) and with other antiretroviral agents. ( 1 )
How It Works
12.1 Mechanism of Action Darunavir is an HIV-1 antiviral drug [see Microbiology ( 12.4 )] .
Dosage & Administration
2 DOSAGE AND ADMINISTRATION Testing: In treatment-experienced patients, treatment history genotypic and/or phenotypic testing is recommended prior to initiation of therapy with darunavir/ritonavir to assess drug susceptibility of the HIV-1 virus ( 2.1 , 12.4 ) Monitor serum liver chemistry tests before and during therapy with darunavir/ritonavir. ( 2.1 , 2.2 , 5.2 ) Treatment-naïve adult patients and treatment-experienced adult patients with no darunavir resistance associated substitutions: 800 mg (one 800 mg tablet) taken with ritonavir 100 mg once daily and with food. ( 2.3 ) Treatment-experienced adult patients with at least one darunavir resistance associated substitution: 600 mg (one 600 mg tablet) taken with ritonavir 100 mg twice daily and with food. ( 2.3 ) Pregnant patients: 600 mg (one 600 mg tablet) taken with ritonavir 100 mg twice daily and with food. ( 2.4 ) Pediatric patients (3 to less than 18 years of age and weighing at least 10 kg): dosage of darunavir and ritonavir is based on body weight and should not exceed the adult dose. Darunavir should be taken with ritonavir and with food. ( 2.5 ) Darunavir/ritonavir is not recommended for use in patients with severe hepatic impairment. ( 2.6 ) 2.1 Testing Prior to Initiation of Darunavir/ritonavir In treatment-experienced patients, treatment history, genotypic and/or phenotypic testing is recommended to assess drug susceptibility of the HIV-1 virus [see Microbiology ( 12.4 )]. Refer to Dosage and Administration ( 2.3 ), ( 2.4 ) and ( 2.5 ) for dosing recommendations. Appropriate laboratory testing such as serum liver biochemistries should be conducted prior to initiating therapy with darunavir/ritonavir [see Warnings and Precautions ( 5.2 )]. 2.2 Monitoring During Treatment with Darunavir/ritonavir Patients with underlying chronic hepatitis, cirrhosis or in patients who have pre-treatment elevations of transaminases should be monitored for elevation in serum liver biochemistries, especially during the first several months of darunavir/ritonavir treatment [see Warnings and Precautions ( 5.2 )]. 2.3 Recommended Dosage in Adult Patients Darunavir must be co-administered with ritonavir to exert its therapeutic effect. Failure to correctly co-administer darunavir with ritonavir will result in plasma levels of darunavir that will be insufficient to achieve the desired antiviral effect and will alter some drug interactions. Patients who have difficulty swallowing darunavir tablets can use the 100 mg per mL darunavir oral suspension. Treatment-Naïve Adult Patients The recommended oral dose of darunavir is 800 mg (one 800 mg tablet or 8 mL of the oral suspension) taken with ritonavir 100 mg (one 100 mg tablet or capsule or 1.25 mL of a 80 mg per mL ritonavir oral solution) once daily and with food. An 8 mL darunavir dose should be taken as two 4 mL administrations with the included oral dosing syringe. Treatment-Experienced Adult Patients The recommended oral dosage for treatment-experienced adult patients is summarized in Table 1. Baseline genotypic testing is recommended for dose selection. However, when genotypic testing is not feasible, darunavir 600 mg taken with ritonavir 100 mg twice daily is recommended. Table 1 Recommended Darunavir/ritonavir Dosage in Treatment-Experienced Adult Patients a V11I, V32I, L33F, I47V, I50V, I54L, I54M, T74P, L76V, I84V and L89V b An 8 mL darunavir dose should be taken as two 4 mL administrations with the included oral dosing syringe Baseline Resistance Formulation and Recommended Dosing Darunavir tablets with ritonavir tablets or capsule Darunavir oral suspension (100 mg/mL) with ritonavir oral solution (80 mg/mL) With no darunavir resistance associated substitutions a One 800 mg darunavir tablet with one 100 mg ritonavir tablet/capsule, taken once daily with food 8 mL b darunavir oral suspension with 1.25 mL ritonavir oral solution, taken once daily with food With at least one darunavir resistance associated substitutions a , or with no baseline resistance information One 600 mg darunavir tablet with one 100 mg ritonavir tablet/capsule, taken twice daily with food 6 mL darunavir oral suspension with 1.25 mL ritonavir oral solution, taken twice daily with food 2.4 Recommended Dosage During Pregnancy The recommended dosage in pregnant patients is darunavir 600 mg taken with ritonavir 100 mg twice daily with food. Darunavir 800 mg taken with ritonavir 100 mg once daily should only be considered in certain pregnant patients who are already on a stable darunavir 800 mg with ritonavir 100 mg once daily regimen prior to pregnancy, are virologically suppressed (HIV-1 RNA less than 50 copies per mL) and in whom a change to twice daily darunavir 600 mg with ritonavir 100 mg may compromise tolerability or compliance. 2.5 Recommended Dosage in Pediatric Patients (age 3 to less than 18 years) Healthcare professionals should pay special attention to accurate dose selection of darunavir, transcription of the medication order, dispensing information and dosing instruction to minimize risk for medication errors, overdose and underdose. Prescribers should select the appropriate dose of darunavir/ritonavir for each individual child based on body weight (kg) and should not exceed the recommended dose for adults. Before prescribing darunavir, children weighing greater than or equal to 15 kg should be assessed for the ability to swallow tablets. If a child is unable to reliably swallow a tablet, the use of darunavir oral suspension should be considered. The recommended dose of darunavir/ritonavir for pediatric patients (3 to less than 18 years of age and weighing at least 10 kg is based on body weight (see Tables 2, 3, 4 and 5) and should not exceed the recommended adult dose. Darunavir should be taken with ritonavir and with food. The recommendations for the darunavir/ritonavir dosage regimens were based on pediatric clinical trial data and population pharmacokinetic modeling and simulation [see Use in Specific Populations ( 8.4 ) and Clinical Pharmacology ( 12.3 )]. Dosing Recommendations for Treatment-Naïve Pediatric Patients or Antiretroviral Treatment-Experienced Pediatric Patients with No Darunavir Resistance Associated Substitutions Pediatric Patients Weighing At Least 10 kg but Less than 15 kg The weight-based dose in antiretroviral treatment-naïve pediatric patients or antiretroviral treatment-experienced pediatric patients with no darunavir resistance associated substitutions is darunavir 35 mg/kg once daily with ritonavir 7 mg/kg once daily using the following table: Table 2 Recommended Dose for Pediatric Patients Weighing 10 kg to Less Than 15 kg Who are Treatment-Naïve or Treatment-Experienced with No Darunavir Resistance Associated Substitutions a a darunavir resistance associated substitutions: V11I, V32I, L33F, I47V, I50V, I54M, I54L, T74P, L76V, I84V and L89V b The 350 mg, 385 mg, 455 mg and 490 mg darunavir dose for the specified weight groups were rounded up for suspension dosing convenience to 3.6 mL, 4 mL, 4.6 mL and 5 mL, respectively. Body weight (kg) Formulation: Darunavir oral suspension (100 mg/mL) and ritonavir oral solution (80 mg/mL) Dose: once daily with food Greater than or equal to 10 kg to less than 11 kg Darunavir 3.6 mL b (350 mg) with ritonavir 0.8 mL (64 mg) Greater than or equal to 11 kg to less than 12 kg Darunavir 4 mL b (385 mg) with ritonavir 0.8 mL (64 mg) Greater than or equal to 12 kg to less than 13 kg Darunavir 4.2 mL (420 mg) with ritonavir 1 mL (80 mg) Greater than or equal to 13 kg to less than 14 kg Darunavir 4.6 mL b (455 mg) with ritonavir 1 mL (80 mg) Greater than or equal to 14 kg to less than 15 kg Darunavir 5 mL b (490 mg) with ritonavir 1.2 mL (96 mg) Pediatric Patients Weighing At Least 15 kg Pediatric patients weighing at least 15 kg can be dosed with darunavir oral tablet(s) using the following table: Table 3 Recommended Dose for Pediatric Patients Weighing At Least 15 kg Who are Treatment-Naïve or Treatment-Experienced with No Darunavir Resistance Associated Substitutions a a darunavir resistance associated substitutions: V11I, V32I, L33F, I47V, I50V, I54M, I54L, T74P, L76V, I84V and L89V b The 675 mg dose using darunavir tablets for this weight group is rounded up to 6.8 mL for suspension dosing convenience. c The 6.8 mL and 8 mL darunavir dose should be taken as two (3.4 mL or 4 mL respectively) administrations with the included oral dosing syringe. Body weight (kg) Formulation: Darunavir tablet(s) and ritonavir capsules or tablets (100 mg) Formulation: Darunavir oral suspension (100 mg/mL) and ritonavir oral solution (80 mg/mL) Dose: once daily with food Dose: once daily with food Greater than or equal to 15 kg to less than 30 kg Darunavir 600 mg with ritonavir 100 mg Darunavir 6 mL (600 mg) with ritonavir 1.25 mL (100 mg) Greater than or equal to 30 kg to less than 40 kg Darunavir 675 mg with ritonavir 100 mg Darunavir 6.8 mL bc (675 mg) with ritonavir 1.25 mL (100 mg) Greater than or equal to 40 kg Darunavir 800 mg with ritonavir 100 mg Darunavir 8 mL c (800 mg) with ritonavir 1.25 mL (100 mg) Dosing Recommendations for Treatment-Experienced Pediatric Patients with At Least One Darunavir Resistance Associated Substitutions Pediatric Patients Weighing At Least 10 kg but Less than 15 kg The weight-based dose in antiretroviral treatment-experienced pediatric patients with at least one darunavir resistance associated substitution is darunavir 20 mg/kg twice daily with ritonavir 3 mg/kg twice daily using the following table: Table 4 Recommended Dose for Pediatric Patients Weighing 10 kg to Less Than 15 kg Who are Treatment-Experienced with At Least One Darunavir Resistance Associated Substitution a a darunavir resistance associated substitutions: V11I, V32I, L33F, I47V, I50V, I54M, I54L, T74P, L76V, I84V and L89V Body weight (kg) Formulation: Darunavir oral suspension (100 mg/mL) and ritonavir oral solution (80 mg/mL) Dose: twice daily with food Greater than or equal to 10 kg to less than 11 kg Darunavir 2 mL (200 mg) with ritonavir 0.4 mL (32 mg) Greater than or equal to 11 kg to less than 12 kg Darunavir 2.2 mL (220 mg) with ritonavir 0.4 mL (32 mg) Greater than or equal to 12 kg to less than 13 kg Darunavir 2.4 mL (240 mg) with ritonavir 0.5 mL (40 mg) Greater than or equal to 13 kg to less than 14 kg Darunavir 2.6 mL (260 mg) with ritonavir 0.5 mL (40 mg) Greater than or equal to 14 kg to less than 15 kg Darunavir 2.8 mL (280 mg) with ritonavir 0.6 mL (48 mg) Pediatric Patients Weighing At Least 15 kg Pediatric patients weighing at least 15 kg can be dosed with darunavir oral tablet(s) or suspension using the following table: Table 5 Recommended Dose for Pediatric Patients Weighing At Least 15 kg Who are Treatment-Experienced with At Least One Darunavir Resistance Associated Substitution a a darunavir resistance associated substitutions: V11I, V32I, L33F, I47V, I50V, I54M, I54L, T74P, L76V, I84V and L89V b The 375 mg and 450 mg dose using darunavir tablets for this weight group is rounded up to 3.8 mL and 4.6 mL for suspension dosing convenience. Body weight (kg) Formulation: Darunavir tablet(s) and ritonavir tablets, capsules (100 mg) or oral solution (80 mg/mL) Formulation: Darunavir oral suspension (100 mg/mL) and ritonavir oral solution (80 mg/mL) Dose: twice daily with food Dose: twice daily with food Greater than or equal to 15 kg to less than 30 kg Darunavir 375 mg with ritonavir 0.6 mL (48 mg) Darunavir 3.8 mL (375 mg) b with ritonavir 0.6 mL (48 mg) Greater than or equal to 30 kg to less than 40 kg Darunavir 450 mg with ritonavir 0.75 mL (60 mg) Darunavir 4.6 mL (450 mg) b with ritonavir 0.75 mL (60 mg) Greater than or equal to 40 kg Darunavir 600 mg with ritonavir 100 mg Darunavir 6 mL (600 mg) with ritonavir 1.25 mL (100 mg) The use of darunavir/ritonavir in pediatric patients below 3 years of age is not recommended [see Warnings and Precautions ( 5.10 ) and Use in Specific Populations ( 8.4 )]. 2.6 Not Recommended in Patients with Severe Hepatic Impairment No dosage adjustment is required in patients with mild or moderate hepatic impairment. No data are available regarding the use of darunavir/ritonavir when co-administered to subjects with severe hepatic impairment; therefore, darunavir/ritonavir is not recommended for use in patients with severe hepatic impairment [see Use in Specific Populations ( 8.6 ) and Clinical Pharmacology ( 12.3 )].
Side Effects Overview
6 ADVERSE REACTIONS The following adverse reactions are discussed in other sections of labeling: Hepatotoxicity [see Warnings and Precautions ( 5.2 )] Severe Skin Reactions [see Warnings and Precautions ( 5.3 )] Diabetes Mellitus/Hyperglycemia [see Warnings and Precautions ( 5.6 )] Fat Redistribution [see Warnings and Precautions ( 5.7 )] Immune Reconstitution Syndrome [see Warnings and Precautions ( 5.8 )] Hemophilia [see Warnings and Precautions ( 5.9 )] Due to the need for co-administration of darunavir with ritonavir, please refer to ritonavir prescribing information for ritonavir-associated adverse reactions. The most common clinical adverse drug reactions to darunavir/ritonavir (incidence greater than or equal to 5%) of at least moderate intensity (greater than or equal to Grade 2) were diarrhea, nausea, rash, headache, abdominal pain and vomiting. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Viona Pharmaceuticals Inc. at 1-888-304-5011 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. Treatment Naïve-Adults: TMC114-C211 The safety assessment is based on all safety data from the Phase 3 trial TMC114-C211 comparing darunavir/ritonavir 800/100 mg once daily versus lopinavir/ritonavir 800/200 mg per day in 689 antiretroviral treatment-naïve HIV-1-infected adult subjects. The total mean exposure for subjects in the darunavir/ritonavir 800/100 mg once daily arm and in the lopinavir/ritonavir 800/200 mg per day arm was 162.5 and 153.5 weeks, respectively. The majority of the adverse drug reactions (ADRs) reported during treatment with darunavir/ritonavir 800/100 mg once daily were mild in severity. The most common clinical ADRs to darunavir/ritonavir 800/100 mg once daily (greater than or equal to 5%) of at least moderate intensity (greater than or equal to Grade 2) were diarrhea, headache, abdominal pain and rash. 2.3% of subjects in the darunavir/ritonavir arm discontinued treatment due to ADRs. ADRs to darunavir/ritonavir 800/100 mg once daily of at least moderate intensity (greater than or equal to Grade 2) in antiretroviral treatment-naïve HIV-1-infected adult subjects are presented in Table 6 and subsequent text below the table. Table 6 Selected Clinical Adverse Drug Reactions to Darunavir/ritonavir 800/100 mg Once Daily a of at Least Moderate Intensity (≥ Grade 2) Occurring in ≥ 2% of Antiretroviral Treatment-Naïve HIV-1-Infected Adult Subjects (Trial TMC114-C211) N=total number of subjects per treatment group; FTC=emtricitabine; TDF=tenofovir disoproxil fumarate a Excluding laboratory abnormalities reported as ADRs. System organ class, preferred term, % Darunavir/ritonavir 800/100 mg once daily + TDF/FTC N=343 Lopinavir/ritonavir 800/200 mg per day + TDF/FTC N=346 Gastrointestinal Disorders Abdominal pain 6% 6% Diarrhea 9% 16% Nausea 4% 4% Vomiting 2% 4% General Disorders and Administration Site Conditions Fatigue < 1% 3% Metabolism and Nutrition Disorders Anorexia 2% < 1% Nervous System Disorders Headache 7% 6% Skin and Subcutaneous Tissue Disorders Rash 6% 7% Less Common Adverse Reactions Treatment-emergent ADRs of at least moderate intensity (greater than or equal to Grade 2) occurring in less than 2% of antiretroviral treatment-naïve subjects receiving darunavir/ritonavir 800/100 mg once daily are listed below by body system: Gastrointestinal Disorders : acute pancreatitis, dyspepsia, flatulence General Disorders and Administration Site Conditions : asthenia Hepatobiliary Disorders : acute hepatitis (e.g., acute hepatitis, cytolytic hepatitis, hepatotoxicity) Immune System Disorders : (drug) hypersensitivity, immune reconstitution syndrome Metabolism and Nutrition Disorders : diabetes mellitus Musculoskeletal and Connective Tissue Disorders : myalgia, osteonecrosis Psychiatric Disorders : abnormal dreams Skin and Subcutaneous Tissue Disorders : angioedema, pruritus, Stevens-Johnson Syndrome, urticaria Laboratory Abnormalities Selected Grade 2 to 4 laboratory abnormalities that represent a worsening from baseline observed in antiretroviral treatment-naïve adult subjects treated with darunavir/ritonavir 800/100 mg once daily are presented in Table 7. Table 7 Grade 2 to 4 Laboratory Abnormalities Observed in Antiretroviral Treatment-Naïve HIV-1-Infected Adult Subjects a (Trial TMC114-C211) N=total number of subjects per treatment group; FTC=emtricitabine; TDF=tenofovir disoproxil fumarate a Grade 4 data not applicable in Division of AIDS grading scale. Laboratory parameter % Limit Darunavir /ritonavir 800/100 mg once daily + TDF/FTC Lopinavir/ ritonavir 800/200 mg per day + TDF/FTC Biochemistry Alanine Aminotransferase Grade 2 > 2.5 to ≤ 5 X ULN 9% 9% Grade 3 > 5 to ≤ 10 X ULN 3% 3% Grade 4 > 10 X ULN < 1% 3% Aspartate Aminotransferase Grade 2 > 2.5 to ≤ 5 X ULN 7% 10% Grade 3 > 5 to ≤ 10 X ULN 4% 2% Grade 4 > 10 X ULN 1% 3% Alkaline Phosphatase Grade 2 > 2.5 to ≤ 5 X ULN 1% 1% Grade 3 > 5 to ≤ 10 X ULN 0% < 1% Grade 4 > 10 X ULN 0% 0% Hyperbilirubinemia Grade 2 > 1.5 to ≤ 2.5 X ULN < 1% 5% Grade 3 > 2.5 to ≤ 5 X ULN < 1% < 1% Grade 4 > 5 X ULN 0% 0% Triglycerides Grade 2 5.65 mmol/L to 8.48 mmol/L 500 mg/dL to 750 mg/dL 3% 10% Grade 3 8.49 mmol/L to 13.56 mmol/L 751 mg/dL to 1,200 mg/dL 2% 5% Grade 4 > 13.56 mmol/L > 1,200 mg/dL 1% 1% Total Cholesterol Grade 2 6.20 mmol/L to 7.77 mmol/L 240 mg/dL to 300 mg/dL 23% 27% Grade 3 > 7.77 mmol/L > 300 mg/dL 1% 5% Low-Density Lipoprotein Cholesterol Grade 2 4.13 mmol/L to 4.90 mmol/L 160 mg/dL to 190 mg/dL 14% 12% Grade 3 ≥ 4.91 mmol/L ≥ 191 mg/dL 9% 6% Elevated Glucose Levels Grade 2 6.95 mmol/L to 13.88 mmol/L 126 mg/dL to 250 mg/dL 11% 10% Grade 3 13.89 mmol/L to 27.75 mmol/L 251 mg/dL to 500 mg/dL 1% < 1% Grade 4 > 27.75 mmol/L > 500 mg/dL 0% 0% Pancreatic Lipase Grade 2 > 1.5 to ≤ 3 X ULN 3% 2% Grade 3 > 3 to ≤ 5 X ULN < 1% 1% Grade 4 > 5 X ULN 0% < 1% Pancreatic Amylase Grade 2 > 1.5 to ≤ 2 X ULN 5% 2% Grade 3 > 2 to ≤ 5 X ULN 5% 4% Grade 4 > 5 X ULN 0% < 1% Treatment-Experienced Adults: TMC114-C214 The safety assessment is based on all safety data from the Phase 3 trial TMC114-C214 comparing darunavir/ritonavir 600/100 mg twice daily versus lopinavir/ritonavir 400/100 mg twice daily in 595 antiretroviral treatment-experienced HIV-1-infected adult subjects. The total mean exposure for subjects in the darunavir/ritonavir 600/100 mg twice daily arm and in the lopinavir/ritonavir 400/100 mg twice daily arm was 80.7 and 76.4 weeks, respectively. The majority of the ADRs reported during treatment with darunavir/ritonavir 600/100 mg twice daily were mild in severity. The most common clinical ADRs to darunavir/ritonavir 600/100 mg twice daily (greater than or equal to 5%) of at least moderate intensity (greater than or equal to Grade 2) were diarrhea, nausea, rash, abdominal pain and vomiting. 4.7% of subjects in the darunavir/ritonavir arm discontinued treatment due to ADRs. ADRs to darunavir/ritonavir 600/100 mg twice daily of at least moderate intensity (greater than or equal to Grade 2) in antiretroviral treatment-experienced HIV-1-infected adult subjects are presented in Table 8 and subsequent text below the table. Table 8 Selected Clinical Adverse Drug Reactions to Darunavir/ritonavir 600/100 mg Twice Daily a of at Least Moderate Intensity (≥ Grade 2) Occurring in ≥ 2% of Antiretroviral Treatment-Experienced HIV-1-Infected Adult Subjects (Trial TMC114-C214) N=total number of subjects per treatment group; OBR=optimized background regimen a Excluding laboratory abnormalities reported as ADRs System organ class, preferred term, % Darunavir/ritonavir 600/100 mg twice daily + OBR N=298 Lopinavir/ritonavir 400/100 mg twice daily + OBR N=297 Gastrointestinal Disorders Abdominal distension 2% < 1% Abdominal pain 6% 3% Diarrhea 14% 20% Dyspepsia 2% 1% Nausea 7% 6% Vomiting 5% 3% General Disorders and Administration Site Conditions Asthenia 3% 1% Fatigue 2% 1% Metabolism and Nutrition Disorders Anorexia 2% 2% Diabetes mellitus 2% < 1% Nervous System Disorders Headache 3% 3% Skin and Subcutaneous Tissue Disorders Rash 7% 3% Less Common Adverse Reactions Treatment-emergent ADRs of at least moderate intensity (greater than or equal to Grade 2) occurring in less than 2% of antiretroviral treatment-experienced subjects receiving darunavir/ritonavir 600/100 mg twice daily are listed below by body system: Gastrointestinal Disorders : acute pancreatitis, flatulence Musculoskeletal and Connective Tissue Disorders : myalgia Psychiatric Disorders : abnormal dreams Skin and Subcutaneous Tissue Disorders : pruritus, urticaria Laboratory Abnormalities Selected Grade 2 to 4 laboratory abnormalities that represent a worsening from baseline observed in antiretroviral treatment-experienced adult subjects treated with darunavir/ritonavir 600/100 mg twice daily are presented in Table 9. Table 9 Grade 2 to 4 Laboratory Abnormalities Observed in Antiretroviral Treatment-Experienced HIV-1-Infected Adult Subjects a (Trial TMC114-C214) N=total number of subjects per treatment group; OBR=optimized background regimen a Grade 4 data not applicable in Division of AIDS grading scale Laboratory parameter, % Limit Darunavir/ritonavir 600/100 mg twice daily + OBR Lopinavir/ ritonavir 400/100 mg twice daily + OBR Biochemistry Alanine Aminotransferase Grade 2 > 2.5 to ≤ 5 X ULN 7% 5% Grade 3 > 5 to ≤ 10 X ULN 2% 2% Grade 4 > 10 X ULN 1% 2% Aspartate Aminotransferase Grade 2 > 2.5 to ≤ 5 X ULN 6% 6% Grade 3 > 5 to ≤ 10 X ULN 2% 2% Grade 4 > 10 X ULN < 1% 2% Alkaline Phosphatase Grade 2 > 2.5 to ≤ 5 X ULN < 1% 0% Grade 3 > 5 to ≤ 10 X ULN < 1% < 1% Grade 4 > 10 X ULN 0% 0% Hyperbilirubinemia Grade 2 > 1.5 to ≤ 2.5 X ULN < 1% 2% Grade 3 > 2.5 to ≤ 5 X ULN < 1% < 1% Grade 4 > 5 X ULN < 1% 0% Triglycerides Grade 2 5.65 mmol/L to 8.48 mmol/L 500 mg/dL to 750 mg/dL 10% 11% Grade 3 8.49 mmol/L to 13.56 mmol/L 751 mg/dL to 1,200 mg/dL 7% 10% Grade 4 > 13.56 mmol/L > 1,200 mg/dL 3% 6% Total Cholesterol Grade 2 6.20 mmol/L to 7.77 mmol/L 240 mg/dL to 300 mg/dL 25% 23% Grade 3 > 7.77 mmol/L > 300 mg/dL 10% 14% Low-Density Lipoprotein Cholesterol Grade 2 4.13 mmol/L to 4.90 mmol/L 160 mg/dL to 190 mg/dL 14% 14% Grade 3 ≥ 4.91 mmol/L ≥ 191 mg/dL 8% 9% Elevated Glucose Levels Grade 2 6.95 mmol/L to 13.88 mmol/L 126 mg/dL to 250 mg/dL 10% 11% Grade 3 13.89 mmol/L to 27.75 mmol/L 251 mg/dL to 500 mg/dL 1% < 1% Grade 4 > 27.75 mmol/L > 500 mg/dL < 1% 0% Pancreatic Lipase Grade 2 > 1.5 to ≤ 3 X ULN 3% 4% Grade 3 > 3 to ≤ 5 X ULN 2% < 1% Grade 4 > 5 X ULN < 1% 0% Pancreatic Amylase Grade 2 > 1.5 to ≤ 2 X ULN 6% 7% Grade 3 > 2 to ≤ 5 X ULN 7% 3% Grade 4 > 5 X ULN 0% 0% Serious ADRs The following serious ADRs of at least moderate intensity (greater than or equal to Grade 2) occurred in the Phase 2b and Phase 3 trials with darunavir/ritonavir: abdominal pain, acute hepatitis, acute pancreatitis, anorexia, asthenia, diabetes mellitus, diarrhea, fatigue, headache, hepatic enzyme increased, hypercholesterolemia, hyperglycemia, hypertriglyceridemia, immune reconstitution syndrome, low density lipoprotein increased, nausea, pancreatic enzyme increased, rash, Stevens-Johnson Syndrome and vomiting. Patients Co-Infected with Hepatitis B and/or Hepatitis C Virus In subjects co-infected with hepatitis B or C virus receiving darunavir/ritonavir, the incidence of adverse events and clinical chemistry abnormalities was not higher than in subjects receiving darunavir/ritonavir who were not co-infected, except for increased hepatic enzymes [see Warnings and Precautions ( 5.2 )] . The pharmacokinetic exposure in co-infected subjects was comparable to that in subjects without co-infection. Clinical Trials Experience: Pediatric Patients Darunavir/ritonavir has been studied in combination with other antiretroviral agents in 3 Phase 2 trials. TMC114-C212, in which 80 antiretroviral treatment-experienced HIV-1-infected pediatric subjects 6 to less than 18 years of age and weighing at least 20 kg were included, TMC114-C228, in which 21 antiretroviral treatment-experienced HIV-1-infected pediatric subjects 3 to less than 6 years of age and weighing at least 10 kg were included and TMC114-C230 in which 12 antiretroviral treatment-naïve HIV-1 infected pediatric patients aged from 12 to less than 18 years and weighing at least 40 kg were included. The TMC114-C212 and C228 trials evaluated darunavir/ritonavir twice daily dosing and the TMC114-C230 trial evaluated darunavir/ritonavir once daily dosing [see Use in Specific Populations ( 8.4 ) and Clinical Studies ( 14.4 )] . Frequency, type and severity of ADRs in pediatric subjects were comparable to those observed in adults. TMC114-C212 Clinical ADRs to darunavir/ritonavir (all grades, greater than or equal to 3%), were vomiting (13%), diarrhea (11%), abdominal pain (10%), headache (9%), rash (5%), nausea (4%) and fatigue (3%). Grade 3 or 4 laboratory abnormalities were ALT increased (Grade 3: 3%; Grade 4: 1%), AST increased (Grade 3: 1%), pancreatic amylase increased (Grade 3: 4%, Grade 4: 1%), pancreatic lipase increased (Grade 3: 1%), total cholesterol increased (Grade 3: 1%) and LDL increased (Grade 3: 3%). TMC114-C228 Clinical ADRs to darunavir/ritonavir (all grades, greater than or equal to 5%), were diarrhea (24%), vomiting (19%), rash (19%), abdominal pain (5%) and anorexia (5%). There were no Grade 3 or 4 laboratory abnormalities considered as ADRs in this trial. TMC114-C230 Clinical ADRs to darunavir/ritonavir (all grades, greater than or equal to 3%), were vomiting (33%), nausea (25%), diarrhea (16.7%), abdominal pain (8.3%), decreased appetite (8.3%), pruritus (8.3%) and rash (8.3%). There were no Grade 3 or 4 laboratory abnormalities considered as ADRs in this trial. 6.2 Postmarketing Experience The following adverse reactions have been identified during post approval use of darunavir. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Metabolism and Nutrition Disorders: Redistribution of body fat Musculoskeletal and Connective Tissue Disorders: Rhabdomyolysis (associated with co-administration with HMG-CoA reductase inhibitors and darunavir/ritonavir) Skin and Subcutaneous Tissue Disorders: Toxic epidermal necrolysis, acute generalized exanthematous pustulosis, drug rash with eosinophilia and systemic symptoms [see Warnings and Precautions ( 5.3 )] Renal and Urinary Disorders: Crystal nephropathy, crystalluria
Warnings & Precautions
5 WARNINGS AND PRECAUTIONS Drug-induced hepatitis (e.g., acute hepatitis, cytolytic hepatitis) has been reported with darunavir/ritonavir. Monitor liver function before and during therapy, especially in patients with underlying chronic hepatitis, cirrhosis or in patients who have pre-treatment elevations of transaminases. Post-marketing cases of liver injury, including some fatalities, have been reported. ( 5.2 ) Skin reactions ranging from mild to severe, including Stevens-Johnson Syndrome, toxic epidermal necrolysis, drug rash with eosinophilia and systemic symptoms and acute generalized exanthematous pustulosis, have been reported. Discontinue treatment if severe reaction develops. ( 5.3 ) Use with caution in patients with a known sulfonamide allergy. ( 5.4 ) Patients may develop new onset diabetes mellitus or hyperglycemia. Initiation or dose adjustments of insulin or oral hypoglycemic agents may be required. ( 5.6 ) Patients may develop redistribution/accumulation of body fat or immune reconstitution syndrome. ( 5.7 , 5.8 ) Patients with hemophilia may develop increased bleeding events. ( 5.9 ) Darunavir/ritonavir is not recommended in pediatric patients below 3 years of age in view of toxicity and mortality observed in juvenile rats dosed with darunavir up to days 23 to 26 of age. ( 5.10 ) 5.1 Importance of Co-administration with Ritonavir Darunavir must be co-administered with ritonavir and food to achieve the desired antiviral effect. Failure to administer darunavir with ritonavir and food may result in a loss of efficacy of darunavir. Please refer to ritonavir prescribing information for additional information on precautionary measures. 5.2 Hepatotoxicity Drug-induced hepatitis (e.g., acute hepatitis, cytolytic hepatitis) has been reported with darunavir/ritonavir. During the clinical development program (N=3,063), hepatitis was reported in 0.5% of patients receiving combination therapy with darunavir/ritonavir. Patients with pre-existing liver dysfunction, including chronic active hepatitis B or C, have an increased risk for liver function abnormalities including severe hepatic adverse events. Post-marketing cases of liver injury, including some fatalities, have been reported. These have generally occurred in patients with advanced HIV-1 disease taking multiple concomitant medications, having co-morbidities including hepatitis B or C co-infection and/or developing immune reconstitution syndrome. A causal relationship with darunavir/ritonavir therapy has not been established. Appropriate laboratory testing should be conducted prior to initiating therapy with darunavir/ritonavir and patients should be monitored during treatment. Increased AST/ALT monitoring should be considered in patients with underlying chronic hepatitis, cirrhosis or in patients who have pre-treatment elevations of transaminases, especially during the first several months of darunavir/ritonavir treatment. Evidence of new or worsening liver dysfunction (including clinically significant elevation of liver enzymes and/or symptoms such as fatigue, anorexia, nausea, jaundice, dark urine, liver tenderness, hepatomegaly) in patients on darunavir/ritonavir should prompt consideration of interruption or discontinuation of treatment. 5.3 Severe Skin Reactions During the clinical development program (n=3,063), severe skin reactions, accompanied by fever and/or elevations of transaminases in some cases, have been reported in 0.4% of subjects. Stevens-Johnson Syndrome was rarely (less than 0.1%) reported during the clinical development program. During post-marketing experience toxic epidermal necrolysis, drug rash with eosinophilia and systemic symptoms and acute generalized exanthematous pustulosis have been reported. Discontinue darunavir/ritonavir immediately if signs or symptoms of severe skin reactions develop. These can include but are not limited to severe rash or rash accompanied with fever, general malaise, fatigue, muscle or joint aches, blisters, oral lesions, conjunctivitis, hepatitis and/or eosinophilia. Rash (all grades, regardless of causality) occurred in 10.3% of subjects treated with darunavir/ritonavir [see Adverse Reactions ( 6 )] . Rash was mostly mild-to-moderate, often occurring within the first four weeks of treatment and resolving with continued dosing. The discontinuation rate due to rash in subjects using darunavir/ritonavir was 0.5%. Rash occurred more commonly in treatment-experienced subjects receiving regimens containing darunavir/ritonavir + raltegravir compared to subjects receiving darunavir/ritonavir without raltegravir or raltegravir without darunavir/ritonavir. However, rash that was considered drug related occurred at similar rates for all three groups. These rashes were mild to moderate in severity and did not limit therapy; there were no discontinuations due to rash. 5.4 Sulfa Allergy Darunavir contains a sulfonamide moiety. Darunavir should be used with caution in patients with a known sulfonamide allergy. In clinical studies with darunavir/ritonavir, the incidence and severity of rash were similar in subjects with or without a history of sulfonamide allergy. 5.5 Risk of Serious Adverse Reactions due to Drug Interactions Initiation of darunavir/ritonavir, a CYP3A inhibitor, in patients receiving medications metabolized by CYP3A or initiation of medications metabolized by CYP3A in patients already receiving darunavir/ritonavir, may increase plasma concentrations of medications metabolized by CYP3A and reduce plasma concentrations of active metabolite(s) formed by CYP3A. Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of darunavir/ritonavir, respectively. These interactions may lead to: Clinically significant adverse reactions, potentially leading to severe, life threatening or fatal events from greater exposures of concomitant medications. Clinically significant adverse reactions from greater exposures of darunavir/ritonavir. Loss of therapeutic effect of the concomitant medications from lower exposures of active metabolite(s). Loss of therapeutic effect of darunavir/ritonavir and possible development of resistance from lower exposures of darunavir/ritonavir. See Table 10 for steps to prevent or manage these possible and known significant drug interactions, including dosing recommendations [see Drug Interactions ( 7 )]. Consider the potential for drug interactions prior to and during darunavir/ritonavir therapy; review concomitant medications during darunavir/ritonavir therapy; and monitor for the adverse reactions associated with the concomitant drugs [see Contraindications ( 4 ) and Drug Interactions ( 7 )]. 5.6 Diabetes Mellitus/Hyperglycemia New onset diabetes mellitus, exacerbation of pre-existing diabetes mellitus and hyperglycemia have been reported during postmarketing surveillance in HIV-infected patients receiving protease inhibitor (PI) therapy. Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. In some cases, diabetic ketoacidosis has occurred. In those patients who discontinued PI therapy, hyperglycemia persisted in some cases. Because these events have been reported voluntarily during clinical practice, estimates of frequency cannot be made and causal relationships between PI therapy and these events have not been established. 5.7 Fat Redistribution Redistribution/accumulation of body fat, including central obesity, dorsocervical fat enlargement (buffalo hump), peripheral wasting, facial wasting, breast enlargement and "cushingoid appearance" have been observed in patients receiving antiretroviral therapy. The mechanism and long-term consequences of these events are currently unknown. A causal relationship has not been established. 5.8 Immune Reconstitution Syndrome Immune reconstitution syndrome has been reported in patients treated with combination antiretroviral therapy, including darunavir. During the initial phase of combination antiretroviral treatment, patients whose immune systems respond may develop an inflammatory response to indolent or residual opportunistic infections (such as Mycobacterium avium infection, cytomegalovirus, Pneumocystis jirovecii pneumonia [PCP] or tuberculosis), which may necessitate further evaluation and treatment. Autoimmune disorders (such as Graves' disease, polymyositis, Guillain-Barre syndrome and autoimmune hepatitis) have also been reported to occur in the setting of immune reconstitution; however, the time to onset is more variable and can occur many months after initiation of antiretroviral treatment. 5.9 Hemophilia There have been reports of increased bleeding, including spontaneous skin hematomas and hemarthrosis in patients with hemophilia type A and B treated with PIs. In some patients, additional factor VIII was given. In more than half of the reported cases, treatment with PIs was continued or reintroduced if treatment had been discontinued. A causal relationship between PI therapy and these episodes has not been established. 5.10 Not Recommended in Pediatric Patients Below 3 Years of Age Darunavir/ritonavir in pediatric patients below 3 years of age is not recommended in view of toxicity and mortality observed in juvenile rats dosed with darunavir (from 20 mg/kg to 1,000 mg/kg) up to days 23 to 26 of age [see Use in Specific Populations ( 8.1 and 8.4 ) and Clinical Pharmacology ( 12.3 )] .
Contraindications
4 CONTRAINDICATIONS Co-administration of darunavir/ritonavir is contraindicated with drugs that are highly dependent on CYP3A for clearance and for which elevated plasma concentrations are associated with serious and/or life-threatening events (narrow therapeutic index). Examples of these drugs and other contraindicated drugs (which may lead to reduced efficacy of darunavir) are listed below [see Drug Interactions ( 7.3 )] . Due to the need for co-administration of darunavir with ritonavir, please refer to ritonavir prescribing information for a description of ritonavir contraindications. Alpha 1-adrenoreceptor antagonist: alfuzosin Anti-gout: colchicine, in patients with renal and/or hepatic impairment Antimycobacterial: rifampin Antipsychotics: lurasidone, pimozide Cardiac Disorders: dronedarone, ivabradine, ranolazine Ergot derivatives, e.g. dihydroergotamine, ergotamine, methylergonovine Herbal product: St. John's wort (Hypericum perforatum) Hepatitis C direct acting antiviral: elbasvir/grazoprevir Lipid modifying agents: lomitapide, lovastatin, simvastatin Opioid Antagonist: naloxegol PDE-5 inhibitor: sildenafil when used for treatment of pulmonary arterial hypertension Sedatives/hypnotics: orally administered midazolam, triazolam Co-administration of darunavir/ritonavir is contraindicated with drugs that are highly dependent on CYP3A for clearance and for which elevated plasma concentrations are associated with serious and/or life-threatening events (narrow therapeutic index). ( 4 )