Homatropine

Homatropine

Homatropine

Medication

Homatropine (Equipin, Isopto Homatropine) is an anticholinergic medication that is an antagonist at muscarinic acetylcholine receptors and thus the parasympathetic nervous system. It is used in eye drops as a cycloplegic (to temporarily paralyze accommodation), and as a mydriatic (to dilate the pupil).

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The related chemical compound homatropine methylbromide (methylhomatropine) is a different medication. Homatropine is less potent than atropine and has a shorter duration of action. It is available as the hydrobromide salt. Homatropine is also given as an atropine substitute,[1] given to reverse the muscarinic and CNS effects associated with indirect cholinomimetic (anti-AChase) administration.

Homatropine hydrobromide is on the World Health Organization's List of Essential Medicines.[2]

Side effects

Contraindications

References

  1. [1]
    Scharer LL, Burhenne HJ (April 1964). "Megacolon associated with administration of an anticholinergic drug in a patient with ulcerative colitis". The American Journal of Digestive Diseases. 9 (4): 268–274. doi:10.1007/bf02232133. PMID 14142388. S2CID 19169565.
  2. [2]
    World Health Organization (2023). The selection and use of essential medicines 2023: web annex A: World Health Organization model list of essential medicines: 23rd list (2023). Geneva: World Health Organization. hdl:10665/371090. WHO/MHP/HPS/EML/2023.02.


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