Letter: Was it a drug? (Optimax).
D000928:Antidepressive Agents; D001205:Ascorbic Acid; D004338:Drug Combinations; D011307:Drug Prescriptions; D005251:Fees, Medical; D007603:Jurisprudence; D007880:Legislation, Drug; D011736:Pyridoxine; D013222:State Medicine; D014364:Tryptophan; D006113:United Kingdom
D000928:Antidepressive Agents; D004338:Drug Combinations; D014364:Tryptophan; D011736:Pyridoxine; D001205:Ascorbic Acid