Macimorelin Acetate
Generic Name: macimorelin acetate
Brand Names:
Macrilen
11 DESCRIPTION MACRILEN for oral solution is macimorelin acetate, a synthetic growth hormone secretagogue receptor agonist. Macimorelin acetate is described chemically as D-Tryptophanamide, 2-methylalanyl-N-[(1R)-1-(formylamino)-2-(1H-indol-3-yl)ethyl]-acetate. The molecular formula for macimorelin acetate is C 28 H 34 N 6 O 5 with a molecular weight of 534.6 g/mol.
Overview
11 DESCRIPTION MACRILEN for oral solution is macimorelin acetate, a synthetic growth hormone secretagogue receptor agonist. Macimorelin acetate is described chemically as D-Tryptophanamide, 2-methylalanyl-N-[(1R)-1-(formylamino)-2-(1H-indol-3-yl)ethyl]-acetate. The molecular formula for macimorelin acetate is C 28 H 34 N 6 O 5 with a molecular weight of 534.6 g/mol.
Uses
1 INDICATIONS AND USAGE MACRILEN is indicated for the diagnosis of adult growth hormone deficiency (AGHD). MACRILEN is a growth hormone (GH) secretagogue receptor agonist indicated for the diagnosis of adult growth hormone deficiency ( 1 ). Limitations of Use : The safety and diagnostic performance has not been established for subjects with BMI > 40kg/m 2 ( 1 ). Limitations of Use The safety and diagnostic performance of MACRILEN have not been established for subjects with a body mass index (BMI) > 40 kg/m 2 .
Dosage
2 DOSAGE AND ADMINISTRATION Recommended dose is 0.5 mg/kg as a single oral dose, after fasting for at least 8 hours ( 2.1 ). See Full Prescribing Information for important preparation and administration instructions ( 2.3 ). Discontinue therapy with strong CYP3A4 inducers, growth hormones and drugs that affect GH release for an adequate length of time before administering MACRILEN ( 2.2 ). Adequately replace other hormone deficiencies before administering MACRILEN ( 2.2 ). 2.1 Recommended Dose The recommended dose is a single oral dose of 0.5 mg/kg of macimorelin. The dose is administered as a reconstituted solution [see Dosage and Administration ( 2.3 )] in patients fasted for at least 8 hours.
Side Effects
6 ADVERSE REACTIONS to report suspected adverse reactions 1-800-332-1088 to report suspected adverse reactions , contact Aeterna Zentaris GmbH at 1-843-900-2332, or FDA at 1‑800-332-1088 or www.fda.gov/medwatch. to report suspected adverse reactions 1-800-332-1088 to report suspected adverse reactions , contact Aeterna Zentaris GmbH at 1-843-900-2332, or FDA at 1‑800-332-1088 or www.fda.gov/medwatch. The most common adverse reactions were dysgeusia, dizziness, headache, fatigue, nausea, hunger, diarrhea, upper respiratory tract infection, feeling hot, hyperhidrosis, nasopharyngitis, and sinus bradycardia ( 6.1 ).
Interactions
7 DRUG INTERACTIONS 7.1 Drugs that Prolong QT Interval Co-administration of MACRILEN with drugs that prolong the QT interval (such as antipsychotic medications (e.g., chlorpromazine, haloperidol, thioridazine, ziprasidone), antibiotics (e.g., moxifloxacin), Class 1A (e.g., quinidine, procainamide) and Class III (e.g., amiodarone, sotalol) antiarrhythmic medications or any other medications known to prolong the QT interval) may lead to development of torsade de pointes-type ventricular tachycardia. Avoid concomitant use of MACRILEN with drugs that prolong the QT interval. Sufficient washout time of drugs that are known to prolong the QT interval prior to administration of MACRILEN is recommended [see Dosage and Administration ( 2.2 ) and Warnings and Precautions ( 5.1 )] .
Warnings
5 WARNINGS AND PRECAUTIONS QT Prolongation: QT prolongation can lead to development of torsade de pointes-type ventricular tachycardia. Avoid the concomitant use of MACRILEN with drugs that are known to prolong QT interval ( 5.1 , 7.1 ). Potential for False Positive Test Results with Use of Strong CYP3A4 Inducers: Discontinue and washout strong CYP3A4 inducers before testing ( 5.2 , 7.2 ). Potential for False Negative Test Results in Recent Onset Hypothalamic Disease: Consider repeat testing if indicated ( 5.3 ). 5.1 QT Prolongation MACRILEN causes an increase of about 11 msec in the corrected QT (QTc) interval [see Clinical Pharmacology ( 12.2 )] . 4 CONTRAINDICATIONS None None ( 4 )
Pregnancy
8.1 Pregnancy Risk summary There are no available data with MACRILEN use in pregnant women to inform a drug associated risk for adverse developmental outcomes. Animal reproduction studies have not been conducted with MACRILEN. MACRILEN is indicated as a single dose which limits the risk of adverse developmental outcomes from exposure to MACRILEN. The estimated background risk of major birth defects and miscarriage for the indicated populations is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S.
Storage
16 HOW SUPPLIED/STORAGE AND HANDLING MACRILEN 60 mg is supplied as white to off-white granules in an aluminum pouch. Each pouch contains 60 mg macimorelin (equivalent to 68 mg macimorelin acetate) that when reconstituted with 120 mL of water provides a 60 mg/120 mL (0.5 mg/mL) macimorelin solution. MACRILEN is available in boxes containing 1 pouch per box (NDC 0169-1401-01).
Frequently Asked Questions
What is Macimorelin Acetate used for?▼
1 INDICATIONS AND USAGE MACRILEN is indicated for the diagnosis of adult growth hormone deficiency (AGHD). MACRILEN is a growth hormone (GH) secretagogue receptor agonist indicated for the diagnosis of adult growth hormone deficiency ( 1 ). Limitations of Use : The safety and diagnostic performance has not been established for subjects with BMI > 40kg/m 2 ( 1 ). Limitations of Use The safety and diagnostic performance of MACRILEN have not been established for subjects with a body mass index (BMI) > 40 kg/m 2 .
What are the side effects of Macimorelin Acetate?▼
6 ADVERSE REACTIONS to report suspected adverse reactions 1-800-332-1088 to report suspected adverse reactions , contact Aeterna Zentaris GmbH at 1-843-900-2332, or FDA at 1‑800-332-1088 or www.fda.gov/medwatch. to report suspected adverse reactions 1-800-332-1088 to report suspected adverse reactions , contact Aeterna Zentaris GmbH at 1-843-900-2332, or FDA at 1‑800-332-1088 or www.fda.gov/medwatch. The most common adverse reactions were dysgeusia, dizziness, headache, fatigue, nausea, hunger, diarrhea, upper respiratory tract infection, feeling hot, hyperhidrosis, nasopharyngitis, and sinus bradycardia ( 6.1 ).
Can I take Macimorelin Acetate during pregnancy?▼
8.1 Pregnancy Risk summary There are no available data with MACRILEN use in pregnant women to inform a drug associated risk for adverse developmental outcomes. Animal reproduction studies have not been conducted with MACRILEN. MACRILEN is indicated as a single dose which limits the risk of adverse developmental outcomes from exposure to MACRILEN. The estimated background risk of major birth defects and miscarriage for the indicated populations is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S.
What are the important warnings for Macimorelin Acetate?▼
5 WARNINGS AND PRECAUTIONS QT Prolongation: QT prolongation can lead to development of torsade de pointes-type ventricular tachycardia. Avoid the concomitant use of MACRILEN with drugs that are known to prolong QT interval ( 5.1 , 7.1 ). Potential for False Positive Test Results with Use of Strong CYP3A4 Inducers: Discontinue and washout strong CYP3A4 inducers before testing ( 5.2 , 7.2 ). Potential for False Negative Test Results in Recent Onset Hypothalamic Disease: Consider repeat testing if indicated ( 5.3 ). 5.1 QT Prolongation MACRILEN causes an increase of about 11 msec in the corrected QT (QTc) interval [see Clinical Pharmacology ( 12.2 )] . 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.