Not to be confused with Decamethonium.

Demecarium bromide, trade name Humorsol, is a carbamate parasympathomimetic drug that acts as an acetylcholinesterase inhibitor, and is used as a glaucoma medication. It is applied directly to the eye in order to reduce elevated intraocular pressure associated with glaucoma.[1]

Demecarium causes constriction of the pupil (miosis), which improves the drainage of the fluid in the eye (aqueous humour).[2] As demecarium reversibly inhibits cholinesterase, it can be administered less frequently than other parasympathomimetic drugs, such as carbachol.[3]

Commercially produced demecarium bromide solution, previously sold under the trade name Humorsol,[4] is no longer available,[3] although solutions of demecarium can be compounded.[5]

Use in dogs

When administered with a topical corticosteroid, demecarium can delay the onset of primary glaucoma in dogs.[3] High doses of demecarium may cause organophosphate toxicity, particularly if flea treatments containing organophosphates are administered at the same time.[3]

See also

References

  1. ^ Jeske AH, ed. (2014). "Demecarium bromide". Mosby's dental drug reference (11th ed.). St. Louis, Missouri: Elsevier Mosby. p. 374. ISBN 978-0-323-16916-5.
  2. ^ Stein HA, Stein RM, Freeman M (2012). "Demecarium bromide (Humorsol)". Ophthalmic dictionary and vocabulary builder for eye care professionals (4th ed.). New Delhi: Jaypee Brothers Medical. p. 103. ISBN 9789350253656.
  3. ^ a b c d Maggs DJ, Miller PE, Ofri R (2013). "Indirect-acting parasympathomimetic agents". Slatter's Fundamentals of Veterinary Ophthalmology (5th ed.). St. Louis, Missouri: Elsevier. p. 51. ISBN 978-1-4377-2367-0.
  4. ^ Edmunds MW, Mayhew MS (2013). Pharmacology for the primary care provider (4th ed.). Elsevier Health Sciences. p. 174. ISBN 978-0-323-08790-2.
  5. ^ Alario AF, Strong TD, Pizzirani S (November 2015). "Medical Treatment of Primary Canine Glaucoma". The Veterinary Clinics of North America. Small Animal Practice. 45 (6): 1235–59, vi. doi:10.1016/j.cvsm.2015.06.004. PMID 26319445.