Side effects reported with magnesium include nausea, stomach upset and diarrhea (particularly when taking more than 350 mg per day).
Magnesium can interact with certain medications, including some antibiotics, antacids, digoxin, and some medications you may be taking for your bones or to manage your blood pressure. Check with your pharmacist if you are concerned.
If you have a heart problem (called heart block) or severe kidney problems, you should consult a health care professional before starting magnesium.
Magnesium is safe for pregnant or breast-feeding women when it is taken in recommended amounts.
Before taking any new medications, including natural health products, speak to your physician, pharmacist, or other health care provider. Tell your health care provider about any natural health products you may be taking.