OralAllergic conditionsAdult: As tartrate: 25 mg every 4-6 hr. Max: 150 mg in 24 hr. Child: As tartrate: ≥6 yr: 12.5 mg every 4-6 hr. Max: 75 mg in 24 hr.
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Narrow-angle glaucoma, GI ulcer, urinary retention (enlarged prostate), heart disease, hypertension, convulsions, respiratory disease, hyperthyroidism. May impair ability to drive or operate machinery. Pregnancy and lactation.
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Drowsiness, dizziness, headache, loss of appetite, stomach upset, visual disturbances, irritability, dry mouth. CNS stimulation may occur in certain individuals.
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Symptoms: In children: Abnormal eye movements, facial flushing, dry mouth, fever, excitation, agitation, bizarre behaviour, confusion, restlessness, irritability, delirium, twitching, tiredness, trembling, slurred speech, seizures, abnormal tongue movement. In adults: Drowsiness, unconsciousness, excitement, seizures.
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Additive CNS depression with alcohol, barbiturates, hypnotics, opioid analgesics, anxiolytic sedatives and neuroleptics, other CNS depressants.
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May interfere with skin allergy testing.
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Description: Mechanism of Action: Phenindamine is a sedating antihistamine derived from piperidine. Duration: 4-6 hr.
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Store at 15-30°C (59-86°F) away from moisture and light.
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