Tasimelteon
Generic Name: tasimelteon
Brand Names:
Tasimelteon
11 DESCRIPTION Tasimelteon is a melatonin receptor agonist, chemically designated as (1 R-trans )- N -[[2-(2,3-Dihydrobenzofuran-4-yl)cycloprop-1-yl]methyl]propanamide, containing two chiral centers. The molecular formula is C 15 H 19 NO 2 , and the molecular weight is 245.32 g/mol. The structural formula is: Tasimelteon is a white to off-white powder.
Overview
11 DESCRIPTION Tasimelteon is a melatonin receptor agonist, chemically designated as (1 R-trans )- N -[[2-(2,3-Dihydrobenzofuran-4-yl)cycloprop-1-yl]methyl]propanamide, containing two chiral centers. The molecular formula is C 15 H 19 NO 2 , and the molecular weight is 245.32 g/mol. The structural formula is: Tasimelteon is a white to off-white powder.
Uses
1 INDICATIONS AND USAGE Tasimelteon capsules are a melatonin receptor agonist. Tasimelteon capsules are indicated for the treatment of Non 24-Hour Sleep-Wake Disorder (Non-24) in adults ( 1 ) 1.1 Non-24-Hour Sleep-Wake Disorder (Non-24) Tasimelteon capsules are indicated for the treatment of Non-24 in adults.
Dosage
2 DOSAGE AND ADMINISTRATION Indicated Population Dosage Form Body Weight Recommended Dosage Non-24 ( 2.2 ) Adults Capsules Not applicable 20 mg one hour prior to bedtime Tasimelteon capsules and tasimelteon oral suspension are not substitutable ( 2.1 ) Administer at the same time every night ( 2.2 ) Take without food ( 2.4 ) 2.1 Non-Interchangeability between Tasimelteon Capsules and Tasimelteon Oral Suspension Tasimelteon capsules and tasimelteon oral suspension are not substitutable [see Clinical Pharmacology ( 12.3 )]. 2.2 Recommended Dosage for Tasimelteon Capsules for Non-24 Adults The recommended dosage of tasimelteon capsules in adults is 20 mg one hour before bedtime, at the same time every night.
Side Effects
6 ADVERSE REACTIONS The most common adverse reactions (incidence >5% and at least twice as high on tasimelteon than on placebo) were headache, increased alanine aminotransferase, nightmares or unusual dreams, and upper respiratory or urinary tract infection ( 6.1) To report SUSPECTED ADVERSE REACTIONS, contact Apotex Corp. at 1-800-706-5575 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.
Interactions
7 DRUG INTERACTIONS Strong CYP1A2 inhibitors (e.g., fluvoxamine): Avoid use of tasimelteon in combination with strong CYP1A2 inhibitors because of increased exposure ( 7.1 , 12.3 ) Strong CYP3A4 inducers (e.g., rifampin): Avoid use of tasimelteon in combination with rifampin or other CYP3A4 inducers, because of decreased exposure ( 7.2 , 12.3 ) 7.1 Strong CYP1A2 Inhibitors (e.g., fluvoxamine) Avoid use of tasimelteon in combination with fluvoxamine or other strong CYP1A2 inhibitors because of a potentially large increase in tasimelteon exposure and greater risk of adverse reactions [see Clinical Pharmacology ( 12.3 )].
Warnings
5 WARNINGS AND PRECAUTIONS May cause somnolence: After taking tasimelteon capsules, patients should limit their activity to preparing for going to bed, because tasimelteon capsules can impair the performance of activities requiring complete mental alertness ( 5.1 ) 5.1 Somnolence After taking tasimelteon capsules, patients should limit their activity to preparing for going to bed. Tasimelteon capsules can potentially impair the performance of activities requiring complete mental alertness. 4 CONTRAINDICATIONS None. None ( 4 )
Pregnancy
8.1 Pregnancy Risk Summary Available postmarketing case reports with tasimelteon use in pregnant women are not sufficient to evaluate drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes. In pregnant rats, no embryofetal developmental toxicity was observed at exposures of 50 mg/kg/day, or up to 24 times higher than the human exposure at the maximum recommended human dose (MRHD) (see Data). The estimated background risk of major birth defects and miscarriage for the indicated populations are unknown. In the U.S.
Storage
16 HOW SUPPLIED/STORAGE AND HANDLING Tasimelteon 20 mg capsules are available as hard gelatin capsules with dark blue, opaque body and dark blue, opaque cap. Imprinted “APO” and “TAS” over “20” in white ink.
Frequently Asked Questions
What is Tasimelteon used for?▼
1 INDICATIONS AND USAGE Tasimelteon capsules are a melatonin receptor agonist. Tasimelteon capsules are indicated for the treatment of Non 24-Hour Sleep-Wake Disorder (Non-24) in adults ( 1 ) 1.1 Non-24-Hour Sleep-Wake Disorder (Non-24) Tasimelteon capsules are indicated for the treatment of Non-24 in adults.
What are the side effects of Tasimelteon?▼
6 ADVERSE REACTIONS The most common adverse reactions (incidence >5% and at least twice as high on tasimelteon than on placebo) were headache, increased alanine aminotransferase, nightmares or unusual dreams, and upper respiratory or urinary tract infection ( 6.1) To report SUSPECTED ADVERSE REACTIONS, contact Apotex Corp. at 1-800-706-5575 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.
Can I take Tasimelteon during pregnancy?▼
8.1 Pregnancy Risk Summary Available postmarketing case reports with tasimelteon use in pregnant women are not sufficient to evaluate drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes. In pregnant rats, no embryofetal developmental toxicity was observed at exposures of 50 mg/kg/day, or up to 24 times higher than the human exposure at the maximum recommended human dose (MRHD) (see Data). The estimated background risk of major birth defects and miscarriage for the indicated populations are unknown. In the U.S.
What are the important warnings for Tasimelteon?▼
5 WARNINGS AND PRECAUTIONS May cause somnolence: After taking tasimelteon capsules, patients should limit their activity to preparing for going to bed, because tasimelteon capsules can impair the performance of activities requiring complete mental alertness ( 5.1 ) 5.1 Somnolence After taking tasimelteon capsules, patients should limit their activity to preparing for going to bed. Tasimelteon capsules can potentially impair the performance of activities requiring complete mental alertness. 4 CONTRAINDICATIONS None. None ( 4 )
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Medical Disclaimer
This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.