International Unit
Measure of biological activity, not weight
An international unit, or IU, is a standardized amount based on the biological effect of a substance rather than its weight in grams. The number of IUs that correspond to a given weight varies by substance. IU measurements are used for certain hormones, vitamins, and related compounds.
Used in 2 research peptides
- MetabolicRetatrutide + Cagrilintide StackInvestigational community stack pairing a triple incretin agonist with a long-acting amylin analog.
- OtherOxytocinNine-amino-acid neuropeptide hormone; FDA-approved as an injectable for obstetric use, and studied off-label as an intranasal agent for social, anxiety, and sexual-health applications with mixed results.
See also
Educational use only
This calculator is provided for research and educational purposes. Outputs are derived from the values you enter. Always verify your math and consult a licensed physician before acting on any result.