The following is true of quinine

Correct Answer: B

Rationale: Quinine is not used for malaria prophylaxis due to toxicity and short duration of action.

Correct Answer: A

Rationale: Metronidazole is the drug of choice for amoebic dysentery and liver abscess, but not the most effective for cyst eradication.

Correct Answer: C

Rationale: Tinidazole has a longer half-life than metronidazole, allowing less frequent dosing.

Correct Answer: A

Rationale: Quiniodochlor (iodoquinol) can cause optic neuropathy, contraindicating its use in children.

Correct Answer: C

Rationale: Sodium stibogluconate is the drug of choice for visceral leishmaniasis (Kala Azar).