diluent

diluent

1. Ingredient in a medicinal preparation which lacks pharmacological activity but is pharmaceutically necessary or desirable. In tablet or capsule dosage forms this may be lactose or starch; it is particularly useful in increasing the bulk of potent drug substances whose mass is too small for dosage form manufacture or administration. May be a liquid for the dissolution of drug(s) to be injected, ingested, or inhaled. 2. Diluting; denoting that which dilutes.

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