Investigational Medicinal Product [IMP]« Back to Glossary Index
An investigational medicinal product is an active ingredient or placebo that has been pharmaceutically formulated (prepared) for human use which is being tested, or used as a comparator, in a clinical trial.
- when the authorised product is to be used as the test substance or comparator in a clinical trial,
- when used for an unapproved indication (off-label), or
- when used to gain further information about an approved use.
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