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Carbastat Side Effects

Generic name: carbachol ophthalmic

Medically reviewed by Last updated on Apr 22, 2024.

Note: This document contains side effect information about carbachol ophthalmic. Some dosage forms listed on this page may not apply to the brand name Carbastat.

Applies to carbachol ophthalmic: ophthalmic solution.

Serious side effects of Carbastat

Along with its needed effects, carbachol ophthalmic (the active ingredient contained in Carbastat) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur while taking carbachol ophthalmic:


Symptoms of too much medicine being absorbed into the body

Other side effects of Carbastat

Some side effects of carbachol ophthalmic may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Less common

For Healthcare Professionals

Applies to carbachol ophthalmic: compounding powder, intraocular solution, ophthalmic solution.


The most commonly reported side effects were headache and increased intraocular pressure.[Ref]


Uncommon (0.1% to 1%): Increased intraocular pressure

Frequency not reported: Corneal clouding, persistent bullous keratopathy, retinal detachment/postoperative iritis following cataract extraction, anterior chamber inflammation, corneal edema, eye inflammation, visual impairment, corneal degeneration, miosis, blurred vision, eye pain, ocular hyperemia[Ref]


Frequency not reported: Flushing[Ref]


Frequency not reported: Sweating[Ref]


Frequency not reported: Epigastric distress, abdominal cramps, vomiting[Ref]


Frequency not reported: Tightness in urinary bladder[Ref]

Nervous system

Uncommon (0.1% to 1%): Headache[Ref]

More about Carbastat (carbachol ophthalmic)

Patient resources

Other brands

Miostat, Isopto Carbachol

Professional resources

Other brands


Related treatment guides


1. Cerner Multum, Inc. Australian Product Information.

2. Product Information. Miostat (carbachol ophthalmic). Alcon Laboratories Inc. 2011.

3. Product Information. Isopto Carbachol (carbachol ophthalmic). Alcon Laboratories Inc. 2011.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.