dimenHYDRINATE /dim′ənhī″drināt/ , an antiemetic. ▪ INDICATIONS: It is prescribed in the treatment of nausea and motion sickness. ▪ CONTRAINDICATIONS: Asthma or known hypersensitivity to this drug prohibits its use. It is not given to newborns or lactating mothers. ▪ ADVERSE EFFECTS: Among the more serious adverse reactions are skin rash, hypersensitivity reactions, and tachycardia. Drowsiness and dry mouth are common.