Question

The USP defines as liquid preparations of vegetable drugs, containing alcohol as a solvent or as a preservative, or both, so made that, unless otherwise specified in an individual monograph, each milliliter contains the therapeutic constituents of 1 g of the standard drug that it represents.

• A. Tinctures
• B. Extracts
• C. Infusion
• D. Fluid extracts

Answer 1

The Correct Option is D

The question describes a liquid preparation of vegetable drugs containing alcohol, made such that each milliliter contains the therapeutic constituents of 1 gram of the standard drug it represents. Let's analyze each option provided to determine the correct answer:

1. Tinctures: Tinctures are alcohol or hydro-alcoholic preparations usually containing active ingredients from plants. However, they are not typically defined by having the therapeutic constituents of 1 gram of the drug in each milliliter, which eliminates this option.
2. Extracts: Extracts are concentrated preparations of drugs obtained by removing the active constituents from the crude drugs. They can be in solid or liquid form and do not specifically match the description of 1 gram per milliliter concentration.
3. Infusion: Infusions are aqueous preparations typically made by steeping plant material in boiling water. They do not involve alcohol as a solvent or have specific concentration measurements like the one given, ruling this option out.
4. Fluid extracts: Fluid extracts are liquid preparations where each milliliter contains the therapeutic constituents of 1 gram of the standard drug, aligning perfectly with the description provided. They are typically made with alcohol as a solvent or preservative or both.

Therefore, the correct answer is 'Fluid extracts' as they fit the definition provided in the question. Furthermore, fluid extracts are used in pharmaceutics for their concentrated medicinal properties, and this specific concentration is their defining characteristic.