Peptide library / Hormones & metabolism / Glucagon
Glucagon
A 29 amino acid hormone used as emergency treatment for severe low blood sugar.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Severe hypoglycemia rescueFDA approved
- Diagnostic aid for imaging the gutFDA approved
How it is thought to work
Glucagon signals the liver to release stored glucose, rapidly raising blood sugar.
What the evidence shows
Available as injection and as a nasal powder that can be given by non-specialists in an emergency.
Safety and unknowns
Nausea and vomiting are common after use. It is less effective when liver glycogen is depleted.
Regulatory status
FDA-approved. Nasal glucagon (Baqsimi) was approved in 2019.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
More in Hormones & metabolism
Hexarelin
Wellness and performanceA potent growth hormone secretagogue whose effect fades quickly with repeated use.
Humanin
Wellness and performanceA 24 amino acid mitochondrial peptide found in a search for protective factors in Alzheimer disease.
GHRP-6
Wellness and performanceThe first synthetic growth hormone secretagogue, known for making users very hungry.
General information, not medical advice. Do not buy or inject unregulated peptides.