Question

Propyl paraben is a

• A. Preservative
• B. Binding agent
• C. Lubricant
• D. Glidant

Hint:

Remember: Parabens = Preservatives. Methyl (Aqueous phase) and Propyl (Oil phase) are the dynamic duo.

Answer 1

The Correct Option is A

Step 1: Concept
Pharmaceutical additives or excipients are substances added to dosage forms to improve stability, prevent microbial growth, or facilitate manufacturing.

Step 2: Meaning
Preservatives are agents added to multi-dose or water-containing formulations to prevent the growth of bacteria and fungi.

Step 3: Analysis
Parabens (alkyl esters of p-hydroxybenzoic acid) are widely used antimicrobial preservatives. Methyl paraben is often used for bacteria, while Propyl paraben is more effective against molds and fungi. They are frequently used in combination.

Step 4: Conclusion
Therefore, Propyl paraben is classified as a preservative.

Final Answer: (A)