SR stands for which term in drug formulation?

SR stands for which term in drug formulation?

• A. Slow release
• B. Sustained release
• C. Sublingual release
• D. Subcutaneous release

Answer: (B)

The question tests knowledge of release terminology used in drug formulation. SR stands for sustained release, a dosage form designed to release the active drug gradually over an extended period. This slow, controlled release helps maintain steadier therapeutic drug levels, reduces how often a patient must take the medication, and can lessen peaks and troughs in plasma concentration. This term is about the release profile itself, not the route of administration. The other options describe where or how the drug is delivered (for example, sublingual would be under the tongue, and subcutaneous would be under the skin), which are different concepts from the intended extended-release mechanism. While “slow release” conveys a similar idea, the standard pharmacology abbreviation is sustained release.

The question tests knowledge of release terminology used in drug formulation. SR stands for sustained release, a dosage form designed to release the active drug gradually over an extended period. This slow, controlled release helps maintain steadier therapeutic drug levels, reduces how often a patient must take the medication, and can lessen peaks and troughs in plasma concentration.

This term is about the release profile itself, not the route of administration. The other options describe where or how the drug is delivered (for example, sublingual would be under the tongue, and subcutaneous would be under the skin), which are different concepts from the intended extended-release mechanism. While “slow release” conveys a similar idea, the standard pharmacology abbreviation is sustained release.