Buy Ketof Syrup Online $300.00 – $2,500.00 “Ketof Syrup” contains Ketotifen Fumarate as an active ingredient. They are used for Allergic or seasonal conjunctivitis, Itching of the eyes and other conditions. Ketof Syrup works by inhibiting the release of allergy-causing chemicals, histamines in the body by mast cells. Buy Ketof Syrup Online Select options This product has multiple variants. The options may be chosen on the product page