Brompheniramine Maleate USP Powder for Compounding Medications (API) (Rx)Brompheniramine Maleate USP Powder for Compounding Medications (API) is used to formulate antihistamine medications for the relief of allergy symptoms such as sneezing, runny nose, itchy eyes, and skin rashes. It works by blocking histamine receptors, reducing the effects of histamine in the body. Compounding pharmacists can tailor doses and formulations to meet specific patient needs, providing effective treatment for allergies and allergic