<unk>  is contraindicated in premature infants and neonates as well as breastfeeding mothers. It is a pregnancy Category B drug.<unk>  has additive effects with alcohol and other CNS depressants. Monoamine Oxidase inhibitors prolong and intensify the anticholinergic effect of antihistamines.
Diphenhydramine
Olopatadine
Ephedrine
Pseudoephedrine
Meclizine
Lofepramine
Dezocine
Molsidomine