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Chlorpheniramine is an antihistamine. Chlorpheniramine blocks the effects of the naturally
occurring chemical histamine in your body.
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Diphenhydramine is an antihistamine. Diphenhydramine blocks the effects of the naturally
occurring chemical histamine in the body.
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Diphenhydramine is an antihistamine, used to treat allergies, motion sickness, allergic reactions, insomnia, cough, nausea, and phenothiazine drug-induced abnormal muscle movement. Purpose Diphenhydramine is frequently ordered for cancer patients to aid in controlling nausea and itching .
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Diphenhydramine is an antihistamine used in psychiatric medicine to treat phenothiazine drug-induced abnormal muscle movement. It is also used in general medicine to treat allergies, allergic reactions, motion sickness, insomnia , cough, and nausea.
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Phenylephrine is a decongestant. It works by constricting (shrinking) blood vessels (veins
and arteries). Constriction of blood vessels in the sinuses, nose, and chest allows drainage of
these areas, which decreases congestion. Constriction of blood vessels also affects blood
pressure.
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Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages.
Dilated blood vessels can cause nasal congestion (stuffy nose).
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