Akorn Ketotifen Fumarate Opthalmic Solution, 5 mL UPC 317478717102 Sale! from 1199 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Akorn Ketotifen Fumarate Opthalmic Solution, 5 mL Qty available:6 Tweet