Intermediate-Acting Insulin

An insulin formulation may contain a substance which delays, or retards, the absorption of insulin. The combination of insulin and a retarding substance usually results in the formation of crystals which give the liquid a cloudy look. The insulin crystals must be mixed evenly before each injection. Intermediate-acting insulins take approximately 1.5 hours before they begin to have an effect. The largest effect occurs between 4 and 12 hours after the injection, and after approximately 24 hours, the whole dose has been absorbed. Intermediate-acting insulin is designed to give you a background level of insulin.

Intermediate-acting human insulin
Onset: 1.5 hours
Peak: 4-12 hours
Duration: 24 hours

 

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