Tropicamide Ophthalmic Solution, is an anticholinergic medication. The active ingredients of this solution are tropicamide and the inactive ingredients are boric acid; hydrochloric acid; edetate disodium; purified water; and benzalkonium chloride which is a preservative. Sodium hydroxide and/or hydrochloric acid could be used to balance the pH levels. Also available in powder form. Used primarily for pupil dilation and cycloplegia mainly while conducting certain eye examinations or procedures.

Tropicamide (troe-PIK-a-mide) is an acetylcholine receptor blocker, (a muscarinic antagonist). It is used to dilate (enlarge) the eye's pupil in order to allow better examination of the lens, vitreous humor, and retina. It is typically used during eye examinations, but may also be used before or after eye surgery.

Application of tropicamide can produce short acting mydriasis and cycloplegia.

Tropicamide, a parasympatholytic, is occasionally administered in eye drops in combination with p-hydroxyamphetamine (brand name Paremyd), which is a sympathomimetic. The use of drugs stimulating multiple divisions of the autonomic nervous system ensures the dilation the pupil without opposing muscle group firing.

Tropicamide effects on the pupil can last from 6 - 8 hours.

Other brand names include Mydriacyl.