• Basic Info
• Top Questions
• Interactions

Before taking magnesium hydroxide, talk to your doctor if you are taking

• a tetracycline antibiotic such as tetracycline (Sumycin, Achromycin V, and others), demeclocycline (Declomycin), doxycycline (Vibramycin, Monodox, Doxy, and others), minocycline (Minocin, Dynacin, and others), or oxytetracycline (Terramycin, and others);

• a fluoroquinolone antibiotic such as ciprofloxacin (Cipro), ofloxacin (Floxin), enoxacin (Penetrex), norfloxacin (Noroxin), sparfloxacin (Zagam), levofloxacin (Levaquin), lomefloxacin (Maxaquin), grepafloxacin (Raxar), and others;

• penicillamine (Cuprimine);

• digoxin (Lanoxin, Lanoxicaps); or

• nitrofurantoin (Macrodantin, Furadantin, others).

You not be able to take magnesium hydroxide, or you may require a dosage adjustment or special monitoring during treatment if you are taking any of the medicines listed above.

Drugs other than those listed here can also interact with magnesium hydroxide. Talk to your doctor and pharmacist before taking any over-the-counter or prescription medicines, including vitamins, minerals, and herbal products.

Stop taking magnesium hydroxide and seek emergency medical attention if you experience an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives).

Other, less serious side effects may be more likely to occur. Continue to take magnesium hydroxide and talk to your doctor if you experience diarrhea or an upset stomach.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.