2-Methoxyphenothiazine

2-Methoxyphenothiazine is an antihistamine drug used to treat allergy symptoms. It is available as a liquid formulation for adults and children over the age of 12 years. The pharmacokinetic properties of 2-methoxyphenothiazine have been studied in three clinical trials. In one study, the terminal half-life was found to be around 5 hours in both healthy subjects and patients with allergic rhinitis. In another study, 2-methoxyphenothiazine was administered intravenously to healthy subjects at two different doses. After administration, 2-methoxyphenothiazine plasma concentrations were measured using high performance liquid chromatography (HPLC). The bioavailability of 2-methoxyphenothiazine was found to be dose proportional following intravenous administration. 2-Methoxyphenothiazine is metabolized by hydrolysis of its ester group by esterases or glucuron