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Alahist DM
  • Treatments
  • Cough and Nasal Congestion
  • Alahist DM

Alahist DM

Generic name: brompheniramine, dextromethorphan, and phenylephrine [ brome-fen-IR-a-meen, dex-troe-meth-OR-fan, fen-il-EFF-rin ]
Brand names: Alahist DM, BP Allergy DM, Bromatan-DM, Children's Cold & Cough DM, Cold & Cough Childrens, ... show all 12 brands
Drug class:Upper respiratory combinations

Medically reviewed by Drugs.com on May 27, 2022. Written by Cerner Multum.

What is Alahist DM?

Brompheniramine is an antihistamine that reduces the effects of the natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.

Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex.

Phenylephrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).

The combination of brompheniramine, dextromethorphan, and phenylephrine is used to treat runny or stuffy nose, sneezing, itching, watery eyes, cough, and sinus congestion caused by allergies, the common cold, or the flu.

Alahist DM will not treat a cough that is caused by smoking, asthma, or emphysema.

Alahist DM may also be used for purposes not listed in this medication guide.

Warnings

Do not give this medication to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.

You should not use this medication if you have severe constipation, a blockage in your stomach or intestines, or if you are unable to urinate.

Do not use this medication if you have untreated or uncontrolled diseases such as glaucoma, asthma or COPD, high blood pre