Neostigmine Side Effects

Some side effects of neostigmine may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Applies to neostigmine: oral tablet

Get emergency medical help if you have any of these signs of an allergic reaction while taking neostigmine: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using neostigmine and call your doctor at once if you have any of these serious side effects:

• extreme muscle weakness;

• slurred speech, vision problems;

• feeling like you might pass out;

• severe stomach cramps or diarrhea;

• trouble breathing, cough with mucus;

• fast or slow heart rate;

• seizure (convulsions); or

• worsening or no improvement in your symptoms of myasthenia gravis.

Less serious side effects of neostigmine may include:

• headache, drowsiness;

• mild nausea, vomiting, gas;

• urinating more than usual;

• cold sweat, warmth or tingly feeling; or

• mild rash or itching.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

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