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Serdexmethylphenidate And Dexmethylphenidate

Prescription

Nomes comerciais: AZSTARYS

Forma Farmacêutica
Capsule
Via de Administração
ORAL
Fabricante
Corium, LLC.

About This Medication

11 DESCRIPTION AZSTARYS (serdexmethylphenidate and dexmethylphenidate) capsules contain dexmethylphenidate, a CNS stimulant, and serdexmethylphenidate, a prodrug of dexmethylphenidate. AZSTARYS capsules are intended for oral administration and each capsule contains a fixed molar ratio of 30% dexmethylphenidate and 70% serdexmethylphenidate. AZSTARYS contains 26.1/5.2, 39.2/7.8, or 52.3/10.4 mg of serdexmethylphenidate/ dexmethylphenidate (equivalent to 28/6, 42/9, or 56/12 mg of serdexmethylphenidate chloride/ dexmethylphenidate hydrochloride, respectively. The combined molar dose of serdexmethylphenidate and dexmethylphenidate in each dosage strength of AZSTARYS is equivalent to 20, 30, or 40 mg dexmethylphenidate hydrochloride, respectively (equivalent to 17.3, 25.9 or 34.6 mg dexmethylphenidate free base, respectively). The chemical name of serdexmethylphenidate chloride is 3-((( 1S )-1-carboxy-2-hydroxyethyl)carbamoyl)-1-(((( 2R )-2-(2-( 1R )-methoxy-2-oxo-1-phenylethyl)piperidine-1-carbonyl)oxy)methyl)pyridinium chloride. Its molecular formula is C 25 H 30 N 3 O 8 + •Cl - , and its structural formula is: Serdexmethylphenidate chloride is a white to off-white crystalline powder. Its solutions are acid to litmus. It is freely soluble in water, soluble in methanol, and slightly soluble in alcohol and acetone. Its molecular weight is 535.98 g/mol. Dexmethylphenidate is the d-threo enantiomer of racemic d,l -methylphenidate hydrochloride. The chemical name of dexmethylphenidate hydrochloride is methyl ( R )-2-phenyl-2-(( R )-piperidin-2-yl)acetate hydrochloride. Its molecular formula is C 14 H 19 NO 2 •HCl, and its structural formula is: Dexmethylphenidate hydrochloride is a white to off-white powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Inactive ingredients: colloidal silicon dioxide, crospovidone, hypromellose, magnesium stearate, microcrystalline cellulose, and talc. Each strength capsule also contains colorant ingredients in the capsule shell as follows: 26.1/5.2 mg: Black Iron Oxide, FD&C Blue No. 1, Titanium Dioxide 39.2/7.8 mg: Black Iron Oxide, FD&C Blue No. 1, FD&C Red No. 40, Titanium Dioxide 52.3/10.4 mg: Black Iron Oxide, FD&C Red No. 40, FD&C Yellow No. 6, Titanium Dioxide chemical structure-1 chemical structure-2

Princípios Ativos

Ingrediente Concentração
Dexmethylphenidate Hydrochloride -
Serdexmethylphenidate Chloride -

Indicações e Uso

1 INDICATIONS AND USAGE AZSTARYS is indicated for the treatment of Attention Deficit Hyperactivity Disorder (ADHD) in patients 6 years of age and older. Limitations of Use The use of AZSTARYS is not recommended in pediatric patients younger than 6 years of age because they had higher plasma exposure and a higher incidence of adverse reactions (e.g., weight loss) than patients 6 years and older at the same dosage [see Warnings and Precautions ( 5.7 ), Use in Specific Populations ( 8.4 )]. AZSTARYS is a central nervous system (CNS) stimulant indicated for the treatment of Attention Deficit Hyperactivity Disorder (ADHD) in patients 6 years of age and older. ( 1 ) Limitations of Use The use of AZSTARYS is not recommended in pediatric patients younger than 6 years of age because they had higher plasma exposure and a higher incidence of adverse reactions (e.g., weight loss) than patients 6 years and older at the same dosage (5.7, 8.4).

Como funciona

12.1 Mechanism of Action Serdexmethylphenidate is a prodrug of dexmethylphenidate. Dexmethylphenidate HCl is a central nervous system (CNS) stimulant. The mode of therapeutic action in ADHD is not known.

Posologia e Administração

2 DOSAGE AND ADMINISTRATION Pediatric Patients 6 to 12 years : Recommended starting dosage is 39.2 mg/7.8 mg orally once daily in the morning. Dosage may be increased to 52.3 mg/10.4 mg daily or decreased to 26.1 mg/5.2 mg daily after one week. Maximum recommended dosage is 52.3 mg/10.4 mg once daily. ( 2.2 ) Adults and Pediatric Patients 13 to 17 years: Recommended starting dosage is 39.2 mg/7.8 mg orally once daily in the morning. Increase the dosage after one week to 52.3 mg/10.4 mg once daily depending on response and tolerability. ( 2.2 ) Administer with or without food. ( 2.3 ) Swallow capsules whole or open and sprinkle onto applesauce or add to water. ( 2.3 ) To avoid substitution errors and overdosage, do not substitute for other methylphenidate products on a milligram-per-milligram basis. ( 2.4 ) 2.1 Pretreatment Screening Prior to treating patients with AZSTARYS, assess: for the presence of cardiac disease (i.e., perform a careful history, family history of sudden death or ventricular arrhythmia, and physical exam) [see Warnings and Precautions ( 5.2 )]. the family history and clinically evaluate patients for motor or verbal tics or Tourette’s syndrome before initiating AZSTARYS [see Warnings and Precautions ( 5.10 )]. 2.2 Recommended Dosage Pediatric Patients 6 to 12 years of age The recommended starting dosage of AZSTARYS is 39.2 mg serdexmethylphenidate/7.8 mg dexmethylphenidate once daily in the morning. The dosage may be increased after one week to a dosage of 52.3 mg serdexmethylphenidate/10.4 mg dexmethylphenidate per day, or decreased after one week to a dosage of 26.1 mg serdexmethylphenidate/5.2 mg dexmethylphenidate per day, depending on response and tolerability. Maximum recommended dosage is 52.3 mg serdexmethylphendiate/10.4 mg dexmethyphenidate once daily. Adults and Pediatric Patients 13 to 17 years of age The recommended starting dosage of AZSTARYS is 39.2 mg serdexmethylphenidate/7.8 mg dexmethylphenidate once daily in the morning. Increase the dosage after one week to a dosage of 52.3 mg serdexmethylphenidate/10.4 mg dexmethylphenidate per day, depending on response and tolerability. Maximum recommended dosage is 52.3 mg serdexmethylphenidate/10.4 mg dexmethylphenidate once daily. 2.3 Administration Instructions Administer AZSTARYS orally once daily in the morning with or without food [see Clinical Pharmacology ( 12.3 )] . AZSTARYS capsules may be taken whole, or opened and the entire contents sprinkled into 50 mL of water or over 2 tablespoons of applesauce. Consume all the drug/food mixture immediately or within 10 minutes of mixing; do not store for future use [see Clinical Pharmacology ( 12.3 )] . 2.4 Switching from Other Methylphenidate Products If switching from other methylphenidate products, discontinue that treatment, and titrate with AZSTARYS using the titration schedule described above. Do not substitute AZSTARYS for other methylphenidate products on a milligram-per-milligram basis because these products have different pharmacokinetic profiles from AZSTARYS and may have different methylphenidate base composition [see Description ( 11 ), Clinical Pharmacology ( 12.3 )] . 2.5 Dosage Reduction and Discontinuation If paradoxical aggravation of symptoms or other adverse reactions occur, reduce dosage or, if necessary, discontinue AZSTARYS. If improvement is not observed after appropriate dosage adjustment over a one-month period, discontinue AZSTARYS.

Side Effects Overview

6 ADVERSE REACTIONS The following are discussed in more detail in other sections of the labeling: Abuse, Misuse, and Addiction [see Boxed Warning, Warnings and Precautions (5.1) , and Drug Abuse and Dependence (9.2 , 9.3) ] Known hypersensitivity to methylphenidate or other ingredients of AZSTARYS [see Contraindications (4) ] Hypertensive Crisis with Concomitant Use of Monoamine Oxidase Inhibitors [see Contraindications (4) ] Risks to Patients with Serious Cardiac Disease [see Warnings and Precautions (5.2) ] Increased Blood Pressure and Heart Rate [see Warnings and Precautions (5.3) ] Psychiatric Adverse Reactions [see Warnings and Precautions (5.4) ] Priapism [see Warnings and Precautions (5.5) ] Peripheral Vasculopathy, including Raynaud's Phenomenon [see Warnings and Precautions (5.6) ] Long-Term Suppression of Growth in Pediatric Patients [see Warnings and Precautions (5.7) ] Acute Angle Closure Glaucoma [see Warnings and Precautions (5.8) ] Increased Intraocular Pressure and Glaucoma [see Warnings and Precautions (5.9) ] Motor and Verbal Tics, and Worsening of Tourette’s Syndrome [see Warnings and Precautions (5.10) ] Based on accumulated data from other methylphenidate products, the most common (>5% and twice the rate of placebo) adverse reactions are appetite decreased, insomnia, nausea, vomiting, dyspepsia, abdominal pain, weight decreased, anxiety, dizziness, irritability, affect lability, tachycardia, and blood pressure increased. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Corium, LLC at 1-855-253-2407 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. Adverse Reactions in Studies with Other Methylphenidate Products in Pediatric Patients and Adults with ADHD Commonly reported (≥ 5% of the methylphenidate group and at least twice the rate of the placebo group) adverse reactions from placebo-controlled trials of methylphenidate products include: decreased appetite, decreased weight, nausea, abdominal pain, dyspepsia, vomiting, insomnia, anxiety, affect lability, irritability, dizziness, increased blood pressure, and tachycardia. Adverse Reactions in Studies with AZSTARYS in Pediatric Patients (6 to 12 years) with ADHD Short-Term Study A short-term study conducted in pediatric patients 6 to 12 years of age with ADHD was comprised of a 3-week, open-label, dose optimization phase in which all patients received AZSTARYS (n=155), followed by a 1-week, double-blind, controlled phase in which patients were randomized to continue AZSTARYS (n=74) or switch to placebo (n=76). Because of the study design, the reported adverse reaction rates cannot be used to predict the rates that may be expected in clinical practice. Long-Term Study A long-term, open-label safety study was conducted in pediatric patients 6 to 12 years of age with ADHD who either completed the short-term study or were de novo patients. This study was comprised of a 3-week dose optimization phase for patients not recently treated with AZSTARYS followed by a 12-month treatment phase for all patients during which 238 patients received open- label AZSTARYS and had evaluable safety data. A total of 154 patients were treated for 12 months. Because of the open-label, uncontrolled design of this study, the reported adverse reaction rates cannot be assessed in terms of a causal relationship to AZSTARYS treatment. To adjust for normal growth, z-scores were derived (measured in standard deviations [SD]); z- scores normalize for the natural growth of children and adolescents by comparisons to age- and sex-matched population standards. A z-score change less than 0.5 SD is considered not clinically significant. In this study, the mean increase in weight from baseline to Month 12 was 3.4 kg among study completers. The mean change in z-score from baseline to Month 12 was -0.20, indicating a lower than expected increase in body weight compared to children of the same age and sex, on average. Most of the weight z-score decline occurred in the first 4 months of treatment. The mean increase in height from baseline to Month 12 was 4.9 cm among completers. Using the same z-score analysis for height, the mean change in z-score from baseline to Month 12 was - 0.21, indicating a lower than expected increase in height compared to pediatric patients of the same age and sex, on average. 6.2 Postmarketing Experience The following adverse reactions have been identified during post approval use of methylphenidate products. Because these reactions are reported voluntarily from a population of uncertain size, it is not possible to reliably estimate their frequency or establish a causal relationship to drug exposure. These adverse reactions are as follows: Blood and Lymphatic System Disorders : pancytopenia, thrombocytopenia, thrombocytopenic purpura Cardiac Disorders : angina pectoris, bradycardia, extrasystole, supraventricular tachycardia, ventricular extrasystole, palpitations, increased heart rate Eye Disorders : diplopia, increased intraocular pressure, mydriasis, visual impairment, blurred vision General Disorders : chest pain, chest discomfort, hyperpyrexia Gastrointestinal Disorders : dry mouth Hepatobiliary disorders : hepatocellular injury, acute hepatic failure Immune System Disorders : hypersensitivity reactions such as angioedema, anaphylactic reactions, auricular swelling, bullous conditions, exfoliative conditions, urticarias, pruritus NEC, rashes, eruptions, and exanthemas NEC Investigations : alkaline phosphatase increased, bilirubin increased, hepatic enzyme increased, platelet count decreased, white blood cell count abnormal Musculoskeletal, Connective Tissue and Bone Disorders : arthralgia, myalgia, muscle twitching, rhabdomyolysis, muscle cramps Nervous System : convulsion, grand mal convulsion, dyskinesia, serotonin syndrome in combination with serotonergic drugs, nervousness, headache, tremor, drowsiness, vertigo, motor and verbal tics Psychiatric Disorders : disorientation, libido changes, hallucination, hallucination auditory, hallucination visual, logorrhea, mania, restlessness, agitation Skin and Subcutaneous Tissue Disorders : alopecia, erythema, hyperhidrosis Urogenital System : priapism Vascular Disorders : Raynaud's phenomenon

Advertências e Precauções

Contraindicações

Farmacocinética

12.3 Pharmacokinetics Serdexmethylphenidate is a prodrug of dexmethylphenidate. Following a single dose administration of 52.3 mg/10.4 mg AZSTARYS and 40 mg of an dexmethylphenidate hydrochloride extended-release (ER) capsule in healthy volunteers under fasted conditions: The mean peak plasma concentration (C max ) of dexmethylphenidate was 14.0 ng/mL and 28.2 ng/mL, respectively; The mean area under concentration curve (AUC) of dexmethylphenidate was 186 hour*ng/mL and 248 hour*ng/mL, respectively. The plasma PK profiles of dexmethylphenidate following administration of AZSTARYS or dexmethylphenidate hydrochloride extended-release (ER) capsule are presented in Figure 1 . Figure 1: Mean Dexmethylphenidate Plasma Concentration-Time Profiles After A Single Dose Administration of AZSTARYS or Dexmethylphenidate Hydrochloride Extended-Release (ER) Capsule in Healthy Adults Under Fasted Conditions Approximate linear PK was demonstrated for dexmethylphenidate following single dose administration of AZSTARYS in the dose range of 26.1 mg/5.2 mg to 52.3 mg/10.4 mg. Steady state of dexmethylphenidate was approached after the third once-daily dose. At steady-state, dexmethylphenidate mean exposures (C max and AUC 0-24h ) were approximately 37% higher relative to a single-dose administration of AZSTARYS. No accumulation of serdexmethylphenidate was observed after once-daily administration of AZSTARYS. The mean relative exposure of serdexmethylphenidate to dexmethylphenidate based on molar concentrations for C max , C min , and AUC 0-24hr was about 101%, 8.5%, and 55.7%, respectively, following multiple once-daily oral dosing under fasted conditions. Absorption Cross-study calculation estimated an absolute oral bioavailability for serdexmethylphenidate of less than 3%. The median time to reach C max of serdexmethylphenidate and dexmethylphenidate (T max ) is about 2 hours following a single dose administration of AZSTARYS under fasted conditions. Following oral administration of serdexmethylphenidate single moiety alone, dexmethylphenidate T max is reached at about 8 hours post dose. Effect of Food No clinically meaningful differences in the exposure of dexmethylphenidate were observed when administered after an overnight fast, with a high-fat, high-caloric meal, or sprinkled onto applesauce or water. The median time to peak plasma concentration (T max ) was lengthened from 2 to 4-4.5 hours in the presence of food. Distribution Plasma protein binding of serdexmethylphenidate and dexmethylphenidate is approximately 56% and 47%, respectively, at 5 µM (about 60-fold higher than the therapeutic concentrations at the highest recommended dose). The mean apparent volume of distribution for serdexmethylphenidate was about 29.3 L/kg after AZSTARYS administration. Dexmethylphenidate shows a mean volume of distribution of 2.65 L/kg after intravenous administration. Elimination The mean plasma terminal elimination half-life of serdexmethylphenidate and dexmethylphenidate in healthy adult subjects was about 5.7 hours and 11.7 hours, respectively, following a single dose of 52.3 mg/10.4 mg AZSTARYS. The mean apparent clearance for serdexmethylphenidate was about 3.6 L/hr/kg after AZSTARYS administration. Dexmethylphenidate was eliminated with a mean clearance of 0.40 L/hr/kg after intravenous administration. Metabolism Serdexmethylphenidate is a prodrug of dexmethylphenidate and is likely converted to dexmethylphenidate mainly in the lower gastrointestinal tract. Enzymes involved in the conversion process are not identified. Dexmethylphenidate is metabolized primarily via de-esterification to d -α-phenyl-piperidine acetic acid (also known as d -ritalinic acid). Ritalinic acid has little or no pharmacological activity. There is no in vivo interconversion to the l-threo -enantiomer observed. Excretion After oral dosing of radiolabeled serdexmethylphenidate in humans, about 62% and 37% of the radioactivity was recovered in urine and feces, respectively. Metabolite ritalinic acid accounted for approximately 63% of the total recovered dose in urine and feces. About 0.4% and 11% of the dose was excreted as unchanged serdexmethylphenidate in the urine and feces, respectively. After oral dosing of radiolabeled racemic methylphenidate in humans, about 90% of the radioactivity was recovered in urine. The main urinary metabolite of racemic d,l -methylphenidate was d,l -ritalinic acid, accountable for approximately 80% of the dose. Urinary excretion of unchanged methylphenidate accounted for 0.5% of an intravenous dose. Specific Populations Sex No significant pharmacokinetic differences based on sex have been observed for AZSTARYS. Race There is insufficient experience with the use of AZSTARYS to detect ethnic variations in pharmacokinetics. Age The shapes of the plasma concentration time profiles for dexmethylphenidate were similar in pediatric patients (6 to 17 years of age) with ADHD and healthy adults. After the same dose administration of AZSTARYS, dexmethylphenidate exposure in pediatric patients (13 to 17 years of age) and adults was about half of that in pediatric patients 6 to 12 years of age. Plasma concentrations of dexmethylphenidate when adjusted for dose and body weight were similar across all age groups. Renal Impairment There is no experience with the use of AZSTARYS in patients with renal impairment. Since renal clearance is not an important route of serdexmethylphenidate or methylphenidate elimination, renal impairment is expected to have little effect on the pharmacokinetics of AZSTARYS. Hepatic Impairment There is no experience with the use of AZSTARYS in patients with hepatic impairment. Drug Interaction Studies Clinical Studies CYP2D6 substrate : No clinically significant differences in desipramine (CYP2D6 substrate) were observed when co-administered with methylphenidate. In Vitro Studies Alcohol : No clinically significant differences in the rate or amount of release of either serdexmethylphenidate or methylphenidate were observed with alcohol concentrations of 5% and 40%. Cytochrome P450 (CYP) enzymes : Serdexmethylphenidate and methylphenidate do not appear to be substrates, inducers or inhibitors of CYP1A2, 2C8, 2C9, 2C19, 2D6, 2E1 or 3A. Transporters : Serdexmethylphenidate does not appear to be a substrate or inhibitor of P-gp, BCRP, OATP1B1/3, OAT1/3, OCT2, or MATE1/2-K. Figure 1

Frequently Asked Questions

1 INDICATIONS AND USAGE AZSTARYS is indicated for the treatment of Attention Deficit Hyperactivity Disorder (ADHD) in patients 6 years of age and older. Limitations of Use The use of AZSTARYS is not recommended in pediatric patients younger than 6 years of age because they had higher plasma exposure and a higher incidence of adverse reactions (e.g., weight loss) than patients 6 years and older at the same dosage [see Warnings and Precautions ( 5.7 ), Use in Specific Populations …

2 DOSAGE AND ADMINISTRATION Pediatric Patients 6 to 12 years : Recommended starting dosage is 39.2 mg/7.8 mg orally once daily in the morning. Dosage may be increased to 52.3 mg/10.4 mg daily or decreased to 26.1 mg/5.2 mg daily after one week. Maximum recommended dosage is 52.3 mg/10.4 mg once daily. ( 2.2 ) Adults and Pediatric Patients 13 to 17 years: Recommended starting dosage is 39.2 mg/7.8 mg orally once daily in the morning. Increase the dosage after …

5 WARNINGS AND PRECAUTIONS Risks to Patients with Serious Cardiac Disease : Avoid use in patients with known structural cardiac abnormalities, cardiomyopathy, serious cardiac arrhythmias, coronary artery disease, or other serious cardiac disease. (5.2) Increased Blood Pressure and Heart Rate : Monitor blood pressure and pulse. (5.3) Psychiatric Adverse Reactions : Prior to initiating AZSTARYS, screen patients for risk factors for developing a manic episode. If new psychotic or manic symptoms occur, consider discontinuing AZSTARYS. (5.4) Priapism : If abnormally …

4 CONTRAINDICATIONS AZSTARYS is contraindicated in patients: with known hypersensitivity to serdexmethylphenidate, methylphenidate, or other components of AZSTARYS. Bronchospasm, rash, and pruritus have been reported in patients who received AZSTARYS. Hypersensitivity reactions such as angioedema and anaphylactic reactions have been reported in patients treated with other methylphenidate products [see Adverse Reactions ( 6.2 )] . receiving concomitant treatment with monoamine oxidase inhibitors (MAOIs), or within 14 days following discontinuation of treatment with an MAOI, because of the risk of hypertensive …

Serdexmethylphenidate And Dexmethylphenidate is a prescription medication. You will need a valid prescription from a licensed healthcare provider.

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References & Data Sources

Aviso Médico

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Fontes de dados: DailyMed (NLM), openFDA, MFDS

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This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.

Data sources: ChEMBL, PubChem, DailyMed.