Many common drugs such as cold tablets, cough mixtures, antihistamines and other over-thecounter remedies may seriously impair the judgement and co-ordination needed while flying. The safest rule is to

1. Aread the manufacturer’s warning to ensure that you are aware of possible reactions to such drugs.
2. Btake no medicine when you plan to fly, except on the advice of a Civil Aviation Medical Examiner…Correct answer
3. Callow at least 12 hours between taking any medicine or drugs and flying.
4. Dallow at least 8 hours between taking any medicine or drugs and flying.

Question reproduced verbatim from Transport Canada’s PSTAR Study and Reference Guide (TP 11919E). The answer key is Transport Canada’s; the explanation is ours.

A study aid — not a substitute for the official guide, the CARs, or your instructor.