Bepreve is a prescription eye drop that may be prescribed for the treatment of itching associated with allergic conjunctivitis (pink eye). Bepreve should be used as needed until you see the resolutions of symptoms. Allergic conjunctivitis can be caused by many different allergens and occurs when the immune system is overactivated. Bepreve contains a histamine receptor antagonist (antihistamine) that works by reducing inflammation and symptoms caused by the immune system. Fact Table Formula C21H25ClN2O3 License US FDA Bioavailability High (oral), Minimal (topical) Legal status Rx-Only Chemical Name Bepotastine Elimination half-life 2.5 hours Dosage (Strength) 1.5% Pregnancy Consult Doctor Brands Bepreve Protein binding - PubChem CID 2350 MedlinePlus a610012 ChEBI 71204 ATC code none DrugBank DB04890 KEGG D09705 Routes of administration Oral, topical (eye drops)