<unk>  is a parasympathomimetic that acts as an acetylcholinesterase inhibitor. It is one of several topical (applied directly to the affected area) medications used to reduce elevated intraocular pressure (IOP) associated with primary glaucoma in cats, dogs, and other animals.
Demecarium bromide
Tibezonium iodide
Tiemonium iodide
Bethanechol chloride
Benzethonium chloride
Benzalkonium chloride
Potassium perchlorate
Mercuric iodide