SYSTANE PRO Preservative-Free (PF) is the longest lasting dry eye drop in the SYSTANE portfolio 1; SYSTANE PRO PF is a one-of-a-kind multi-dose preservative-free triple action formula that ...

Among these, Ketolorac tromethamine (Acular LS, Acuvail) is a newer formulation and is also available as a preservative free preparation. It may cause stinging in the eyes in some people.