Antacid aluminum hydroxide, magnesium hydroxide, simethicone

Get an overview of ANTACID (aluminum hydroxide, magnesium hydroxide, simethicone liquid), including its generic name, formulation (i.e. pill, oral solution, injection, inhaled medicine) and why it’s used. The medication in Antacid can be sold under different names.

Refer to the “Also Known As” section to reference different products that include the same medication as Antacid.

Drug Basics

Brand Name: Antacid



Route: ORAL

Dosage Form: LIQUID

Data Current As Of: 2018-11-15

active ingredient (in each 5 ml )

Aluminum hydroxide (equiv. to dried gel, USP) 200 mg
Magnesium hydroxide 200 mg
Simethicone 20 mg






Do not take more than 80 mL in a 24-hour period, or use the maximum dosage of this product for more than 2 weeks, except under the advice and supervision of a doctor.

ask a doctor before use if you have

ask a doctor or pharmacist before use if you are

  • presently taking a prescription drug. Antacids may interact with certain prescription drugs.

stop use & ask doctor

if symptoms last more than two weeks

keep out of reach of children



  • shake well before use
  • mL = milliliter
  • adults and children 12 years and older: take 10 mL to 20 mL two times a day, or as directed by a doctor
  • children under 12 years: consult a doctor

other information

  • each 5 mL contains: magnesium 85 mg, sodium 5 mg
  • store at controlled room temperature 20ºC-25ºC (68º-77ºF)
  • do not freeze

inactive ingredients

ethyl alcohol, flavor, glycerin, hydroxyethyl cellulose, methylparaben, propylene glycol, propylparaben, purified water, saccharin sodium, simethicone emulsion, sorbitol

also known as

This drug label information is as submitted to the Food and Drug Administration (FDA) and is intended for informational purposes only. If you think you may have a medical emergency, immediately call your doctor or dial 911. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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