Perennial & seasonal allergic rhinitis, allergic conjunctivitis due to inhalant allergens & foods, mild uncomplicated allergic skin manifestation of urticaria & angioedema; amelionation of allergic reactions to blood or plasma in patients w/ known history of such reactions; dermographism; as adjunctive anaphylactic therapy.
Hypersensitivity reactions, antiparkinsonismAdult & childn ≥12 yr 25-50 mg 4-6 hrly. Max: 300 mg in 24 hr. Childn 6-12 yr 12.5-25 mg 4-6 hrly or 5 mg/kg/day. Max: 150 mg in 24 hr. Motion sicknessAdult & childn ≥12 yr 50 mg before exposure to motion & at bedtime. Childn 6-12 yr 25 mg before exposure to motion & at bedtime. Sleep disordersAdult & childn ≥12 yr 50 mg at bedtime. Childn 2-12 yr 1 mg/kg 30 min before retiring.