Question

Which of the following is used as an adsorbent for bacterial toxoids in preparation of vaccines?

• A. Calcium carbonate
• B. Magnesium oxide
• C. Aluminium phosphate
• D. Sodium bicarbonate

Hint:

Aluminium phosphate binds toxoids to act as a depot, enhancing vaccine efficacy.

Answer 1

The Correct Option is C

Aluminium phosphate is commonly used as an adsorbent in vaccines to enhance immune response by slowly releasing the toxoid and maintaining its stability. It is particularly used in diphtheria, tetanus, and pertussis vaccines.