Blink Gel Tears Lubricating Extra Long Lasting Eye Drops, 0.34 oz, 3 Pack

You can use eye drops with preservatives up to four times a day. But using the preservative drops more often can cause eye irritation. In general, for most artificial tears, you do not want to use them more than 4 times a day. The reason is that most types of artificial tears contain preservatives. The current literature suggests that if you use them more than 4 times per day, you can actually "overload" your eyes with preservatives.

One 0.34 fl oz / 10 mL bottle For moderate to severe dry eye symptoms Uniquely formulated for daytime and nighttime use and provides superior end-of-day comfort