Dallergy PE Tablets
Generic name:chlorpheniramine maleate, methscopolamine nitrate and phenylephrine hydrochloride
Dosage form: tablet, extended release
Drug class:Upper respiratory combinations
Medically reviewed by Drugs.com. Last updated on Apr 21, 2022.
Disclaimer: This drug has not been found by FDA to be safe and effective, and this labeling has not been approved by FDA. For further information about unapproved drugs, click here.
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Dallergy PE Tablets Description
Each Dallergy PE Caplet (capsule shaped caplet) contains:
Chlorpheniramine Maleate . . . . . . . . . . . 8 mg
Methscopolamine Nitrate . . . . . . . . . . . 2.5 mg
Phenylephrine Hydrochloride . . . . . . . . 20 mg
in a specially prepared base to provide a prolonged therapeutic effect.
Chlorpheniramine Maleate is an antihistamine having the chemical name 2-pyridinepropanamine, γ-(4 chlorophenyl)- N,N-dimethyl, (Z)-2- butenedioate (1:1), having the following structural formula:

C16H19ClN2 • C4H4O4 M.W. 390.86
Methscopolamine Nitrate is an anticholinergic having the chemical name 3-Oxa-9-azoniatricyclo [3.3.1.02,4]nonane, 7-(3-hydroxy-1-oxo-2-phenylpropoxy)- 9, 9- dimethyl-, nitrate, [7(S)-(1α, 2β, 4β, 5α, 7β)]-, having the following structural formula:

C18H24NO4• NO3 M.W. 380.4
Phenylephrine Hydrochloride is a decongestant having the chemical name Benzenemethanol, 3-hydroxy-α- [(methylamino)methyl]-, hydrochloride (R)-, having the following structural formula: