Homatropine
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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| AHFS/Drugs.com | Monograph |
| MedlinePlus | a601006 |
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| ECHA InfoCard | 100.001.561  |
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| Formula | C16H21NO3 |
| Molar mass | 275.348 g·mol−1 |
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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 given to reverse the muscarinic and CNS effects associated with indirect cholinomimetic (anti-AChase) administration.
Side effects
- Blurred vision
- Sensitivity to light
Contraindications
- Untreated glaucoma
- Myasthenia gravis
- Severe heart failure
- Thyrotoxicosis
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References
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