What is Geri-Lanta: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Geri-Lanta overview

BRAND NAMES:

  • Almacone, Almacone Double Strength, Alumina-Magnesia-Simethicone, Antacid, Antacid and Gas Relief, Antacid Anti-Gas, Antacid Extra Strength, Antacid Liquid, Antacid-Antigas, Gelusil, Geri-Lanta, Geri-Mox, Equate Antacid, Equaline Antacid, Antacid w/Simethicone

Generic Names:

  • Alum & Mag Hydroxide-Simeth

Uses:

  • Treats upset stomach, heartburn, and gas.

Therapeutic Classes:

  • Antacid, Aluminum/Magnesium Containing, Antacid, Aluminum Containing, Antacid, Magnesium Containing

Forms:

  • Liquid, Tablet, Capsule, Chewable Tablet

How it’s taken:

  • By mouth

What is Geri-Lanta used for?

What form(s) does Geri-Lanta come in

  • Liquid

  • Tablet

  • Capsule

  • Chewable Tablet

What are common Geri-Lanta doses?

  • Bottle 355ML of 200-200-20MG/5ML

How to take Geri-Lanta

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Liquid: Shake well just before you measure a dose. Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Chewable tablet: Do not swallow whole. Chew thoroughly before you swallow.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Do not freeze.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Do not freeze.

  • Chewable tablet: Do not swallow whole. Chew thoroughly before you swallow.

  • Liquid: Shake well just before you measure a dose. Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

What to do if you miss a dose of Geri-Lanta

Geri-Lanta contraindications

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to simethicone, aluminum, or magnesium.

Geri-Lanta warnings

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease.

Geri-Lanta interactions

  • Talk with your doctor before you use this medicine if you are on a low-salt or low-magnesium diet.

  • Antacids affect how your body absorbs other medicines. You might need to take this antacid at a different time than your other medicines. Ask your pharmacist if you have questions.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Geri-Lanta side effects

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

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