Rimegepant Sulfate

1 INDICATIONS AND USAGE NURTEC ODT is a calcitonin gene-related peptide receptor antagonist indicated for the: acute treatment of migraine with or without aura in adults ( 1.1 ) preventive treatment of episodic migraine in adults ( 1.2 ) 1.1 Acute Treatment of Migraine NURTEC ODT is indicated for the acute treatment of migraine with or without aura in adults . 1.2 Preventive Treatment of Episodic Migraine NURTEC ODT is indicated for the preventive treatment of episodic migraine in adults.

2 DOSAGE AND ADMINISTRATION Recommended dosage for acute treatment of migraine: 75 mg taken orally, as needed. ( 2.1 ) The safety of using more than 18 doses in a 30-day period has not been established. ( 2.1 ) Recommended dosage for preventive treatment of episodic migraine: 75 mg taken orally every other day. ( 2.2 ) The maximum dose in a 24-hour period is 75 mg. ( 2.1 ) 2.1 Recommended Dosing for Acute Treatment of Migraine The recommended dose of NURTEC ODT is 75 mg taken orally, as needed. The maximum dose in a 24-hour period is 75 mg. The safety of using more than 18 doses in a 30-day period has not been established. 2.2 Recommended Dosing for Preventive Treatment of Episodic Migraine The recommended dosage of NURTEC ODT is 75 mg taken orally every other day. 2.3 Administration Information Instruct the patient on the following administration instructions: Use dry hands when opening the blister pack. Peel back the foil covering of one blister and gently remove the orally disintegrating tablet (ODT). Do not push the ODT through the foil. As soon as the blister is opened, remove the ODT and place on the tongue; alternatively, the ODT may be placed under the tongue. The ODT will disintegrate in saliva so that it can be swallowed without additional liquid. Take the ODT immediately after opening the blister pack. Do not store the ODT outside the blister pack for future use. 2.4 Concomitant Administration with Strong or Moderate CYP3A4 Inhibitors Avoid concomitant administration of NURTEC ODT with strong inhibitors of CYP3A4. Avoid another dose of NURTEC ODT within 48 hours when it is concomitantly administered with moderate inhibitors of CYP3A4 [see Drug Interactions (7.1) , Clinical Pharmacology (12.3) ]. 2.5 Concomitant Administration with Strong or Moderate CYP3A Inducers Avoid concomitant administration of NURTEC ODT with strong or moderate inducers of CYP3A, which may lead to loss of efficacy of NURTEC ODT [see Drug Interactions (7.2) , Clinical Pharmacology (12.3) ] . 2.6 Concomitant Administration with Potent Inhibitors of P-gp Avoid another dose of NURTEC ODT within 48 hours when it is concomitantly administered with potent inhibitors of P-gp [see Drug Interactions (7.3) , Clinical Pharmacology (12.3) ].

6 ADVERSE REACTIONS The following clinically significant adverse reactions are discussed in greater detail in other sections of the labeling: Hypersensitivity Reactions [see Warnings and Precautions (5.1) ] Hypertension [see Warnings and Precautions (5.2) ] Raynaud’s Phenomenon [see Warnings and Precautions (5.3) ] Acute treatment of migraine: the adverse reaction reported in ≥ 1% of patients treated with NURTEC ODT is nausea. ( 6.1 ) Preventive treatment of episodic migraine: adverse reactions reported in ≥ 2% for rimegepant and ≥ 1% higher than placebo are nausea and abdominal pain/dyspepsia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Pfizer Inc. at 1-800-438-1985 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. Acute Treatment of Migraine The safety of NURTEC ODT for the acute treatment of migraine in adults has been evaluated in a randomized, double-blind, placebo-controlled trial (Study 1) in 682 patients with migraine who received one 75 mg dose of NURTEC ODT [see Clinical Studies (14) ] . Approximately 85% were female, 74% were White, 21% were Black, and 17% were Hispanic or Latino. The mean age at study entry was 40 years (range 18-75 years of age). Long-term safety was assessed in an open-label extension study using a different oral dosage form of rimegepant. That study evaluated 1,798 patients, dosing intermittently for up to one year, including 1,131 patients who were exposed to rimegepant 75 mg for at least 6 months, and 863 who were exposed for at least one year, all of whom treated an average of at least two migraine attacks per month. The most common adverse reaction in Study 1 was nausea (2% in patients who received NURTEC ODT compared to 0.4% of patients who received placebo). Hypersensitivity, including dyspnea and severe rash, occurred in less than 1% of patients treated with NURTEC ODT [see Contraindications (4) and Warnings and Precautions (5.1) ] . Preventive Treatment of Episodic Migraine The safety of NURTEC ODT for the preventive treatment of episodic migraine in adults has been established in a randomized, double-blind, placebo-controlled trial with an open-label extension (Study 2) using a different oral dosage form of rimegepant [see Clinical Studies (14) ] . In the 12-week, double-blind treatment period, 370 patients with migraine received one 75 mg dose of rimegepant every other day . Approximately 81% were female, 80% were White, 17% were Black, and 28% were Hispanic or Latino. The mean age at study entry was 41 years (range 18-74 years of age). Long-term safety was assessed in an open-label extension study that included 603 patients who were treated for up to one year. Overall, 527 patients were exposed to rimegepant 75 mg for at least 6 months, and 311 were exposed for at least one year. The most common adverse reactions (occurring in at least 2% of rimegepant-treated patients and at a frequency of at least 1% higher than placebo) in Study 2 were nausea (2.7% in patients who received rimegepant compared with 0.8% of patients who received placebo) and abdominal pain/dyspepsia (2.4% in patients who received rimegepant compared with 0.8% of patients who received placebo). 6.2 Postmarketing Experience The following adverse reactions have been identified during postapproval use of NURTEC ODT. 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. Immune System Disorders : Hypersensitivity (e.g., anaphylaxis) [see Contraindications (4) and Warnings and Precautions (5.1) ] Vascular Disorders : Hypertension [see Warnings and Precautions (5.2) ] , Raynaud’s phenomenon [see Warnings and Precautions (5.3) ]

12.3 Pharmacokinetics Absorption Following oral administration of NURTEC ODT, rimegepant is absorbed with the maximum concentration at 1.5 hours. The absolute oral bioavailability of rimegepant is approximately 64%. Effects of Food Following administration of NURTEC ODT under fed conditions with a high-fat or low-fat meal, T max was delayed by approximately 1 to 1.5 hours. A high-fat meal reduced C max by 42 to 53% and AUC by 32 to 38%. A low-fat meal reduced C max by 36% and AUC by 28%. NURTEC ODT was administered without regard to food in clinical safety and efficacy studies. The impact of the reduction in rimegepant exposure because of administration with food on its efficacy is unknown. Distribution The steady state volume of distribution of rimegepant is 120 L. Plasma protein binding of rimegepant is approximately 96%. Elimination Metabolism Rimegepant is primarily metabolized by CYP3A4 and to a lesser extent by CYP2C9. Rimegepant is the primary form (~77%) with no major metabolites (i.e., > 10%) detected in plasma. Excretion The elimination half-life of rimegepant is approximately 11 hours in healthy subjects. Following oral administration of [ 14 C]-rimegepant to healthy male subjects, 78% of the total radioactivity was recovered in feces and 24% in urine. Unchanged rimegepant is the major single component in excreted feces (42%) and urine (51%). Specific Populations Renal Impairment In a dedicated clinical study comparing the pharmacokinetics of rimegepant in subjects with mild (estimated creatinine clearance [CLcr] 60-89 mL/min), moderate (CLcr 30-59 mL/min), and severe (CLcr 15-29 mL/min) renal impairment to that with normal subjects (healthy matched control), the exposure of rimegepant following single 75 mg dose was approximately 40% higher in subjects with moderate renal impairment. However, there was no clinically meaningful difference in the exposure of rimegepant in subjects with severe renal impairment compared to subjects with normal renal function (CLcr >= 90 mL/min). NURTEC ODT has not been studied in patients with end-stage renal disease (CLcr < 15 mL/min) [see Use in Specific Populations (8.7) ]. Hepatic Impairment In a dedicated clinical study comparing the pharmacokinetics of rimegepant in subjects with mild, moderate, and severe hepatic impairment to that with normal subjects (healthy matched control), the exposure of rimegepant (C max and AUC) following single 75 mg dose was approximately 2-fold higher in subjects with severe impairment (Child-Pugh class C). There were no clinically meaningful differences in the exposure of rimegepant in subjects with mild (Child-Pugh class A) and moderate hepatic impairment (Child-Pugh class B) compared to subjects with normal hepatic function [see Use in Specific Populations (8.6) ]. Other Specific Populations No clinically significant differences in the pharmacokinetics of rimegepant were observed based on age, sex, race/ethnicity, body weight, or CYP2C9 genotype [see Clinical Pharmacology (12.5) ]. Drug Interaction Studies In Vitro Studies Enzymes Rimegepant is a substrate of CYP3A4 and CYP2C9 (see In Vivo Studies ). Rimegepant is not an inhibitor of CYP1A2, 2B6, 2C9, 2C19, 2D6, or UGT1A1 at clinically relevant concentrations. However, rimegepant is a weak inhibitor of CYP3A4 with time-dependent inhibition. Rimegepant is not an inducer of CYP1A2, CYP2B6, or CYP3A4 at clinically relevant concentrations. Transporters Rimegepant is a substrate of P-gp and BCRP (see In Vivo Studies ) . Rimegepant is not a substrate of OATP1B1 or OATP1B3. Considering its low renal clearance, rimegepant was not evaluated as a substrate of the OAT1, OAT3, OCT2, MATE1, or MATE2-K. Rimegepant is not an inhibitor of P-gp, BCRP, OAT1, or MATE2-K at clinically relevant concentrations. It is a weak inhibitor of OATP1B1 and OAT3. Rimegepant is an inhibitor of OATP1B3, OCT2, and MATE1. In a dedicated interaction study, concomitant administration of 75 mg rimegepant at steady state with metformin, a MATE1 transporter substrate, at steady state resulted in no clinically significant impact on either metformin pharmacokinetics or on glucose utilization. No clinical drug interactions are expected for NURTEC ODT with OATP1B3 or OCT2, at clinically relevant concentrations. In Vivo Studies CYP3A4 Inhibitors In a dedicated drug interaction study, concomitant administration of 75 mg rimegepant (single dose) with itraconazole, a strong CYP3A4 inhibitor, at steady state resulted in increased exposures of rimegepant (AUC by 4-fold and C max by ~1.5-fold) [see Drug Interactions (7.1) ]. No dedicated drug interaction study was conducted to assess the effect of concomitant administration of a weak inhibitor of CYP3A4 on the pharmacokinetics of rimegepant. The concomitant administration of rimegepant with a moderate inhibitor of CYP3A4 may increase rimegepant exposures (AUC) by less than 2-fold [see Drug Interactions (7.1) ]. Concomitant administration of rimegepant with a weak inhibitor of CYP3A4 is not expected to have a clinically significant impact on rimegepant exposures. CYP3A Inducers In a dedicated drug interaction study, concomitant administration of 75 mg rimegepant (single dose) with rifampin, a strong CYP3A4 inducer, at steady state resulted in decreased exposures of rimegepant (AUC by 80% and C max by 64%), which may lead to loss of efficacy [see Drug Interactions (7.2) ] . No dedicated drug interaction study was conducted to assess the effect of concomitant administration of a moderate or weak inducer of CYP3A4 on the pharmacokinetics of rimegepant . Since rimegepant is a moderately sensitive substrate for CYP3A4, drugs that are moderate inducers of CYP3A4 can also cause significant reduction in rimegepant exposure resulting in loss of efficacy [see Drug Interactions (7.2) ] . Clinically significant interaction is not expected with concomitant administration of weak inducers of CYP3A4 and rimegepant. CYP2C9 Inhibitors In a dedicated drug interaction study, concomitant administration of 75 mg rimegepant (single dose) with fluconazole, a combined moderate CYP3A4 and CYP2C9 inhibitor, resulted in increased exposures of rimegepant (AUC by 1.8-fold) with no relevant effect on C max . Rimegepant is primarily metabolized by CYP3A4 and to a lesser extent by CYP2C9. Increase in the exposure of rimegepant can be attributed to combined inhibition of CYP2C9 and CYP3A4 with fluconazole administration suggesting a minor contribution from CYP2C9. Thus, CYP2C9 inhibition alone is not expected to significantly affect rimegepant exposures. P-gp and BCRP Inhibitors In a dedicated drug interaction study, concomitant administration of NURTEC ODT with cyclosporine (a potent P-gp and BCRP inhibitor) and with quinidine (a potent P-gp inhibitor) resulted in an increase of similar magnitude in rimegepant exposure (AUC and C max by 1.6 and 1.4 fold with cyclosporine, and by 1.6 and 1.7 fold with quinidine, respectively) [see Drug Interactions (7.3) ]. Therefore, concomitant administration of NURTEC ODT with BCRP inhibitors is not expected to have a clinically significant impact on rimegepant exposures. Other Drugs: No significant pharmacokinetic interactions were observed when rimegepant was concomitantly administered with oral contraceptives (norelgestromin, ethinyl estradiol), midazolam (a sensitive CYP3A4 substrate), metformin (a MATE1 substrate), or sumatriptan [see Clinical Pharmacology (12.2) ].