OTC Drugs

Question 1

1st generation antihistamines used for motion sickness

Answer 1

diphenhydramine, dimenhydrinate

Question 2

non-opiate blocker in cough center; normally no sedative, analgesic or addictive properties; demethylated by CYP2D6 (deficient in some individuals); >2mg/kg can produce phencyclidine like effects (addiction is problematic)

Answer 2

dextromethorphan

Question 3

what oral expectorant is added to dextromethorphan to produce avoidance response?

Answer 3

guaifenesin