Skip to main content

Macimorelin Side Effects

Medically reviewed by Last updated on Sep 11, 2023.

Applies to macimorelin: oral granule for reconstitution.


Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

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:

Common side effects may include:

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

For Healthcare Professionals

Applies to macimorelin: oral granule for reconstitution.


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


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

Nervous system

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


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


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


Common (1% to 10%): Hunger[Ref]


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


1. (2018) "Product Information. Macrilen (macimorelin)." Aeterna Zentaris

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.