Brompheniramine, dextromethorphan, guaifenesin, and phenylephrine and B12 deficiency

• Generic Name: brompheniramine / dextromethorphan / guaifenesin / phenylephrine
• Dosage Forms: n.a.
• Other Brand Names: AccuHist PDX Syrup, Allanhist PDX Syrup, Bromhist-PDX, EndaCof-PD, Uni-Hist PDX Syrup

Brompheniramine is an antihistamine that reduces the effects of 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.

Guaifenesin is an expectorant. It helps loosen congestion in your chest and throat, making it easier to cough out through your mouth.

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

Brompheniramine, dextromethorphan, guaifenesin, and phenylephrine is a combination medicine used to treat cough, runny or stuffy nose, sneezing, itching, and watery eyes caused by allergies, the common cold, or the flu.

brompheniramine, dextromethorphan, guaifenesin, and phenylephrine will not treat a cough that is caused by smoking, asthma, or emphysema.

Brompheniramine, dextromethorphan, guaifenesin, and phenylephrine may also be used for purposes not listed in this medication guide.