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Generic Name: calcium carbonate and magnesium chloride (KAL see um KAR boe nate and mag NEE see um KLOR ide)
Brand Name: Mag64, MagDelay, Nu-Mag, Slow-Mag, Magnesium Chloride With Calcium, Slow Magnesium Chloride with Calcium
Physician reviewed calcium carbonate and magnesium chloride patient information - includes calcium carbonate and magnesium chloride description, dosage and directions.
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Drug Information:
Calcium and magnesium are naturally occurring minerals. Calcium is needed for bone formation and maintenance. Magnesium helps maintain muscle function and normal heart rhythm. Calcium carbonate and magnesium chloride is a combination medicine used as a supplement. calcium carbonate and magnesium chloride is given when your diet does not provide enough of these minerals, or when they are lost through perspiration. Calcium carbonate and magnesium chloride may also be used for purposes not listed in this medication guide. Learn more

Calcium Side Effects

Calcium carbonate / magnesium chloride Side Effects

Applies to calcium carbonate / magnesium chloride: oral delayed release tablet


Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

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

Stop using calcium carbonate and magnesium chloride and call your doctor at once if you have:

  • nausea, vomiting, stomach pain, loss of appetite, increased thirst or urination;

  • muscle pain or weakness, joint pain;

  • confusion, feeling tired or restless; or

  • slow heart rate, drowsiness, feeling light-headed.

Common side effects may include:

  • diarrhea;

  • constipation; or

  • upset stomach.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

Further information

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

Some side effects may not be reported. You may report them to the FDA.

More about calcium carbonate / magnesium chloride

  • Drug Interactions
  • En Español
  • Drug class: minerals and electrolytes

Consumer resources

  • Calcium carbonate and magnesium chloride

Other brands: Slow-Mag, Mag 64, Nu-Mag, MagDelay

Related treatment guides

  • Dietary Supplementation

Editorial References and Review

Medically reviewed by BestRx Medical Team Last updated on 1/1/2020.

Source: Drugs.com Calcium