Doxycycline counselling — GPhC CRA MCQ
Instant feedback + full explanation. One question, done properly.
Educational content. Not a substitute for clinical judgement or local policy.
Reveal the answer and explanation
Correct answer: D — Separate doxycycline from iron because absorption is reduced by chelation
Iron salts can chelate doxycycline and reduce its absorption. The patient should separate administration times and take doxycycline with plenty of water while upright to reduce oesophageal irritation. Milk can also reduce tetracycline absorption for some products and is not ideal advice. Omeprazole is not the main issue here.
Reference: BNF