Macrilen Side Effects

Generic name: macimorelin

Medically reviewed by Drugs.com. Last updated on Mar 5, 2025.

Note: This document provides detailed information about Macrilen Side Effects associated with macimorelin. Some dosage forms listed on this page may not apply specifically to the brand name Macrilen.

Applies to macimorelin: oral granule for reconstitution.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

• a light-headed feeling, like you might pass out;

• slow heartbeats;

• shortness of breath; or

• fast or pounding heartbeats, fluttering in your chest, shortness of breath, and sudden dizziness (like you might pass out).

Common side effects may include:

• headache, dizziness;

• hunger, nausea, diarrhea;

• increased sweating, feeling hot;

• feeling tired;

• changes in your sense of taste; or

• cold symptoms such as stuffy nose, sinus pain, sore throat.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

See also:

For healthcare professionals

Applies to macimorelin: oral granule for reconstitution.

Cardiovascular adverse events

• Common (1% to 10%): Sinus bradycardia^[Ref]

Gastrointestinal

• Common (1% to 10%): Dysgeusia, nausea, diarrhea^[Ref]

Nervous system

• Common (1% to 10%): Dizziness, headache^[Ref]

Immunologic

• Common (1% to 10%): Upper respiratory tract infection, nasopharyngitis^[Ref]

Other

• Common (1% to 10%): Fatigue, feeling hot^[Ref]

Metabolic

• Common (1% to 10%): Hunger^[Ref]

Dermatologic

• Common (1% to 10%): Hyperhidrosis^[Ref]

Further information

Macrilen side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer