Histex-Ac is part of the Antihistamine / Opioid / Sudafed Combinations class and treats Nasal Congestion, Allergic Rhinitis, Cold Symptoms, and other conditions. Antihistamine / opioid / sudafed combinations are used to treat cough, nasal congestion, cold symptoms, and allergic rhinitis. They work by suppressing cough, relieving nasal congestion, and reducing cold symptoms. Histex-Ac is only available as a brand name drug. Compare antihistamine / opioid / sudafed combinations.

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5 Things to Know About Over-the-Counter Antihistamines

The GoodRx Pharmacist - November 13, 2015

Over-the-counter (OTC) medications can be quick, easy, and convenient options to ease minor aches and pains, the common cold, or seasonal allergies.

Antihistamines are one of the most commonly used OTC medications, including allergy treatments like Allegra (fexofenadine) and Zyrtec (cetirizine), or a sleep aids like Nyquil (which often contain diphenhydramine—also known as Benadryl).

These 5 facts will help you choose the right OTC antihistamine. See More

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