Yellowish discoloration of teeth is seen in children fed on_____________?

Correct answer: B. Tetracyclines

A. High-protein diet
B. Tetracyclines
C. penicillins
D. Erythromycin

Explanation

Tetracyclines cross the placenta and enter breast milk, and in children they bind calcium in developing teeth, causing intrinsic yellow, brown or grey discoloration. Penicillins and erythromycin do not characteristically cause this staining.

Submitted by a TestUstad contributor and published by the TestUstad editorial teamLast updated 18 September 2026

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