Mi-Acid

Generic name: aluminum hydroxide, magnesium hydroxide, and simethicone [ a-LOO-mi-num-hye-DROX-ide, mag-NEE-see-um-hye-DROX-ide, and-sye-METH-i-kone ]
Brand names: Almacone, Gelusil, Mag-al Plus, Milantex, Mylanta Maximum Strength, ... show all 8 brands Mi-Acid, Mintox, Rulox
Drug class: Antacids

Medically reviewed by Drugs.com on Aug 3, 2023. Written by Cerner Multum.

What is Mi-Acid?

Mi-Acid is a combination medicine used to treat heartburn, acid indigestion, upset stomach, bloating caused by gas, or stomach discomfort caused by eating or drinking too much.

Mi-Acid may also be used for purposes not listed in this medication guide.

Mi-Acid side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

This medicine may cause serious side effects. Stop using this medicine and call your doctor at once if you have:

• bone pain, muscle weakness;

• confusion, changes in your mental state, seizure (convulsions); or

• pale skin, feeling light-headed or short of breath, rapid heart rate.

Less serious side effects may be more likely, and you may have none at all.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Warnings

This medicine can make it harder for your body to absorb other medicines, especially certain antibiotics. Avoid taking any other medicine within 2 hours before or 2 hours after you take Mi-Acid.

Before taking this medicine

You should not use this medicine if you are allergic to aluminum hydroxide, magnesium hydroxide, or simethicone.

Ask a doctor or pharmacist if this medicine is safe to use if you have:

• kidney disease; or

• if you are on a low-magnesium diet.

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

Do not give this medicine to a child younger than 12 years old without medical advice.

How should I take Mi-Acid?

Use exactly as directed on the label, or as prescribed by your doctor.

You must chew the chewable tablet before you swallow it.

Shake the oral suspension (liquid) before you measure a dose. Use the dosing cup provided, or use a medicine dose-measuring device (not a kitchen spoon).

Do not take more than the maximum dose recommended on the medicine label. Do not take this medicine at maximum doses for longer than 2 weeks in a row.

An antacid is usually taken for a short time until your symptoms clear up. Call your doctor if your symptoms do not improve within 2 weeks of taking this medicine.

Store at room temperature away from moisture and heat. Do not allow liquid medicine to freeze.

Related/similar drugs

omeprazole, famotidine, pantoprazole, esomeprazole, Nexium, Protonix, simethicone, Pepcid, ranitidine, Prilosec

What happens if I miss a dose?

Since Mi-Acid is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking Mi-Acid?

This medicine can make it harder for your body to absorb other medicines, especially certain antibiotics. Avoid taking any other medicine within 2 hours before or 2 hours after you take Mi-Acid.

What other drugs will affect Mi-Acid?

Other drugs may affect Mi-Acid, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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

Medical Disclaimer

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