Peptipedia › Glossary › Intramuscular (i.m.)
Use & dosing
Intramuscular (i.m.)
Intramuscular (i.m.) - An injection directly into a muscle, using a longer needle. Less common than subcutaneous for peptides, but used in some cases.
Also called i.m.iminto the muscleintramuscular
Some medicines - including certain peptides - are injected not just under the skin but straight into a muscle. Here's when that happens and how it works.
Intramuscular (i.m.) means injecting directly into a muscle (e.g. thigh or glute) with a longer needle that reaches through the subcutaneous fat into the muscle.
Distinction from s.c.
Most peptides (short protein-based active ingredients) are given subcutaneously (into the fatty tissue just under the skin); i.m. is less common and needs a different technique and needle length. Which route fits depends on the specific substance.