Nature Zone turtle eye vitamin supplement is a balanced formula of vitamins minerals antioxidants beta-carotene and phytonutrients for the prevention of eye disorders in turtles. Provides a full regime of vitamins to prevent eye problems like swollen or puffy eyes and irritation due to lack of vitamin A. Apply 2-4 drops to your turtle's food or directly to its mouth. Comes in 2-ounce per bottle.