KROK 1 2019 – Question 135 · KROK (Medicine) · Pharmacology

A 40-year-old man with pulmonary tuberculosis was prescribed isoniazid. Prolonged taking of this drug can result in development of the following vitamin deficiency:

  1. A. Cobalamin
  2. B. Pyridoxine
  3. C. Folic acid
  4. D. Biotin
  5. E. Thiamine
Hint

Think about which vitamin-derived coenzyme is depleted by a hydrazide drug and which toxic effect on nerves follows.

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