aluminum hydroxide-magnesium hydroxide (generic name)

Antacid (aluminum-magnesium) (brand name)

It is used to relieve the symptoms of indigestion, heartburn, gastroesophageal reflux disorder (GERD), or stomach or duodenal ulcers
(a LOO mi num hye DROX ide; mag NEE zee um hye DROX ide)
Table of Contents
powered by healthline

Average Ratings

What is this medicine?

ALUMINUM HYDROXIDE; MAGNESIUM HYDROXIDE (a LOO mi num hye DROX ide; mag NEE zee um hye DROX ide) is an antacid. It is used to relieve the symptoms of indigestion, heartburn, gastroesophageal reflux disorder (GERD), or stomach or duodenal ulcers.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • bowel, intestinal, or stomach disease
  • constipation
  • diarrhea
  • kidney disease
  • liver disease
  • on a sodium (salt) restricted diet
  • stomach bleeding or obstruction
  • an unusual or allergic reaction to aluminum hydroxide, magnesium hydroxide or other antacids, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

Take this medicine by mouth. Follow the directions on the label. Shake well before using. Use a specially marked spoon or container to measure your medicine. Ask your pharmacist if you do not have one. Household spoons are not accurate. Antacids are usually taken after meals and at bedtime or as directed by your doctor or health care professional. After taking the medication, drink a full glass of water. Take your doses at regular intervals. Do not take your medicine more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. While this medicine may be used in children for selected conditions, precautions do apply.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

  • amphetamine
  • antibiotics
  • captopril
  • delavirdine
  • gabapentin
  • heart medicines, such as digoxin or digitoxin
  • hyoscyamine
  • iron salts
  • isoniazid
  • medicines for breathing difficulties like ipratropium and tiotropium
  • medicines for diabetes
  • medicines for fungal infections like itraconazole and ketoconazole
  • medicines for osteoporosis like alendronate, etidronate, risedronate and tiludronate
  • medicines for overactive bladder like oxybutinin and tolterodine
  • medicines for seizures like ethotoin and phenytoin
  • methenamine
  • mycophenolate
  • pancrelipase
  • penicillamine
  • phenothiazines like chlorpromazine, mesoridazine, prochlorperazine, thioridazine
  • quinidine
  • rosuvastatin
  • sodium fluoride
  • sodium polystyrene sulfonate
  • sotalol
  • sucralfate
  • tacrolimus
  • thyroid hormones like levothyroxine
  • ursodiol
  • vitamin D
  • zalcitabine

What should I watch for while using this medicine?

Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse. Do not treat yourself for stomach problems with this medicine for more than one week. See a doctor if you have black tarry stools, rectal bleeding, or if you feel unusually tired. Do not change to another antacid product without advice.

If you are taking other medicines, leave an interval of at least 2 hours before or after taking this medicine.

To help reduce constipation, drink several glasses of water a day.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • bone or joint aches and pains
  • confusion or irritability
  • headache
  • loss of appetite
  • nausea, vomiting
  • unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • chalky taste
  • constipation
  • diarrhea
  • hemorrhoids

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Do not freeze. Protect from light and moisture. Throw away any unused medicine after the expiration date.

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.

Last Updated: March 11, 2009
Licensed from
Top of page
General Drug Tools
General Drug Tools view all tools
Tools for
Healthy Living
Tools for Healthy Living view all tools
Search Tools
Search Tools view all tools
Insurance Plan Tools
Insurance Plan Tools view all tools

What is a reference number?

When you register on this site, you are assigned a reference number. This number contains your profile information and helps UnitedHealthcare identify you when you come back to the site.

If you searched for a plan on this site in a previous session, you might already have a reference number. This number will contain any information you saved about plans and prescription drugs. To use that reference number, click on the "Change or view saved information" link below.

You can retrieve information from previous visits to this site, such as saved drug lists and Plan Selector information.