Webnov 7, 2022 · alahist d (pheniramine / phenylephrine) is a combination of two medications. Pheniramine is an antihistamine that works by blocking histamine. Histamine is a natural. Webapr 23, 2024 · alahist dm (dexbrompheniramine) is a combination medicine used to treat runny or stuffy nose, sneezing, itching, watery eyes, cough, and sinus congestion. This combination medication is used to treat. Webthis combination medication is used to temporarily relieve symptoms caused by the common cold, flu, allergies, or other breathing illnesses (such as sinusitis, bronchitis). Webpheniramine and phenylephrine is a…