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Hypersensitivity to diphenhydramine or any ingredient in the product.
Asthma attack; narrow angle glaucoma; prostatic hypertrophy.
Stenosing peptic ulcer and pyloroduodenal obstructions predispose the patient to an increased risk of GI obstruction. Agents with anticholinergic properties such as diphenhydramine reduce the tone and motility of the GI tract and thus increase the risk of worsening/contributing to GI obstruction.
Bladder-neck obstruction; porphyria.
Do not use in premature infants and neonates.
Do not use in breastfeeding women.
Do not use in patients receiving antidepressant therapy.
