Systane® Hydration Lubricant Eye Drops is a sterile solution containing sodium hyaluronate, polyethylene glycol 400, propylene glycol, hydroxypropyl guar, sorbitol, aminomethyl propanol, boric acid, sodium borate, disodium EDTA, sodium cirate, potassium chloride, sodium chloride, and POLYQUAD® (polidronium chloride) 0.001% preservative.