Hydroxyzine is an antihistamine medication sold under brand names Atarax and Vistaril. Used for treating itchiness, anxiety, insomnia, and motion sickness. First made by Union Chimique Belge in 1956, approved by Pfizer in 1956. 46th most commonly prescribed medication in US with over 13 million prescriptions in 2022
Cyproheptadine is an antihistaminic and antiserotonergic agent. Available as 4 mg tablets containing lactose and magnesium stearate. Soluble in water, freely soluble in methanol