Methdilazine
Methdilazine is only found in individuals that have used or taken this drug. It is a phenothiazine compound with antihistaminic activity. It is used in the treatment of various dermatoses to relieve pruritus.Methdilazine binds to the histamine H<sub>1</sub> receptor. This blocks the action of endogenous histamine, which subsequently leads to temporary relief of the negative symptoms brought on by histamine.