Skip to main content

Nuprin Backache Side Effects

Generic name: magnesium salicylate

Note: This document contains side effect information about magnesium salicylate. Some of the dosage forms listed on this page may not apply to the brand name Nuprin Backache.

Applies to magnesium salicylate: oral tablet


Magnesium salicylate can increase your risk of fatal heart attack or stroke. Do not use this medicine just before or after heart bypass surgery (coronary artery bypass graft, or CABG). Magnesium salicylate may also cause stomach or intestinal bleeding, which can be fatal.

Do not give this medicine to a child or teenager with a fever, flu symptoms, or chickenpox.

Get emergency medical help if you have signs of an allergic reaction: sneezing, runny or stuffy nose; wheezing or trouble breathing; hives; swelling of your face, lips, tongue, or throat.

Stop using this medicine and call your doctor at once if you have:

  • new symptoms such as redness or swelling;

  • ringing in your ears, hearing loss;

  • a light-headed feeling, like you might pass out;

  • new or worsening stomach pain; or

  • bloody or tarry stools, coughing up blood or vomit that looks like coffee grounds.

Less serious side effects may be more likely, and you may have none at all.

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

More about Nuprin Backache (magnesium salicylate)

Consumer resources

Other brands
Doans Pills Extra Strength, MST, Doan's Pills

Related treatment guides

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.