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Glossary

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

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.