What is Miostat? Uses, warnings & side effects

Updated May 14, 2025  •  Published Feb 23, 2023

Miostat overview

BRAND NAMES:

  • Miostat

Generic Names:

  • Miostat

Uses:

  • Used to constrict your pupil during surgery. Also decreases pressure inside the eye after surgery.

Therapeutic Classes:

  • Direct Acting Miotic

Forms:

  • Liquid

How it’s taken:

  • Into the eye

What is Miostat used for?

Miostat is a cholinomimetic drug that binds and activates acetylcholine receptors. It works by reducing the intensity of intraocular pressure elevation in the first 24 hours after cataract surgery.

What form(s) does Miostat come in?

  • Liquid

What are common Miostat dosages?

  • Vial 1.5ml of 0.01%

Miostat images - What does Miostat look like?

  • Miostat
    1.5ml of 0.01% vial

How to take Miostat

  • This medicine will be placed into your eye during surgery.

  • A nurse or other trained health professional will give you this medicine.

What to do if you miss a dose of Miostat

Miostat contraindications - Who shouldn't take Miostat?

  • You should not receive this medicine if you have had an allergic reaction to carbachol.

Miostat warnings

  • Trouble urinating.

  • Stomach cramps.

  • Make sure your doctor knows if you have asthma, an overactive thyroid, heart failure, Parkinson's disease, problems with urination, stomach ulcer, or other problems with your digestive tract.

  • Make sure your doctor knows if you are pregnant or breastfeeding.

Miostat interactions & what to avoid when taking Miostat

  • Make sure your doctor knows if you are pregnant or breastfeeding.

  • Make sure your doctor knows if you have asthma, an overactive thyroid, heart failure, Parkinson's disease, problems with urination, stomach ulcer, or other problems with your digestive tract.

Miostat side effects - How does Miostat make you feel?

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Stomach cramps.

  • Pain, itching, burning, or swelling in your eyes.

  • Trouble urinating.

Less Serious Side Effects

  • Sweating.

  • Warmth or redness in your face, arms, neck or upper chest.

  • Blurred vision, dry eyes.

  • Headache.

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