Among formulations, which has the fastest rate of dissolution?

Among formulations, which has the fastest rate of dissolution?

• A. Capsule
• B. Coated Tablet
• C. Solution
• D. Tablet

Answer: (C)

Dissolution rate is governed by the physical state of the drug. A solution already has the drug dissolved in the solvent, so there’s no solid material that must break apart or dissolve, making its dissolution effectively instantaneous. In contrast, solid dosage forms must disintegrate and then dissolve; a capsule has to release its contents, a tablet must break down, and a coated tablet adds an extra barrier that slows dissolution. Among these options, the solution dissolves fastest because it bypasses all the disintegration and solid-dissolution steps.

Dissolution rate is governed by the physical state of the drug. A solution already has the drug dissolved in the solvent, so there’s no solid material that must break apart or dissolve, making its dissolution effectively instantaneous. In contrast, solid dosage forms must disintegrate and then dissolve; a capsule has to release its contents, a tablet must break down, and a coated tablet adds an extra barrier that slows dissolution. Among these options, the solution dissolves fastest because it bypasses all the disintegration and solid-dissolution steps.