- A concentrated preparation of a drug obtained by removing the active constituents of the drug with suitable solvents, evaporating all or nearly all of the solvent, and adjusting the residual mass or powder to the prescribed standard.
- To remove part of a mixture with a solvent.
- To perform extraction.
[L. ex-traho, pp. -tractus, to draw out]
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Examples: glitazone, GI cocktail, etc.