On this page · 8 sections

Nuprin Backache

Generic name: magnesium salicylate

Brand names: Doans Pills Extra Strength, MST, Nuprin Backache

Last updated November 3, 2026 0 views
Share

What is Nuprin Backache?

Nuprin Backache is a nonsteroidal anti-inflammatory drug (NSAID) that belongs to a group of drugs called salicylates (sa-LIS-il-ates).

Nuprin Backache is used to give temporary relief from back pain.

Nuprin Backache may also be used for other reasons not listed in this medication guide.

This section was rewritten for readability and reviewed for meaning.

How should I take Nuprin Backache?

Use exactly as directed on the label, or as prescribed by your doctor.

Take this medicine with a full glass of water.

Take with food if this medicine upsets your stomach.

Call your doctor if your symptoms get worse or you still have pain after 10 days. Tell your doctor if you have a fever that lasts longer than 3 days, or if you have any redness or swelling.

If you need surgery or dental work, tell the surgeon or dentist ahead of time that you are using Nuprin Backache. You may need to stop using the medicine for a short time.

Store at room temperature away from moisture and heat.

This section was rewritten for readability and reviewed for meaning.

Warnings

Nuprin Backache can raise your risk of a serious heart attack or stroke. Do not use this medicine right before or after heart bypass surgery (coronary artery bypass graft, or CABG). This medicine may also lead to stomach or intestinal bleeding, which can be life-threatening.

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

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

Nuprin Backache can raise your chance of having a fatal heart attack or stroke, even if you don’t have any risk factors. Do not use Nuprin Backache just before or after heart bypass surgery (coronary artery bypass graft, or CABG).

Nuprin Backache may also lead to stomach or intestinal bleeding, which can be fatal. These issues can happen without warning while you are using this medicine, especially in older adults.

You should not use this medicine if you are allergic to aspirin or other salicylates.

Ask a doctor before giving this medicine to a child younger than 12 years old. Do not give this medicine to a child or teenager who has a fever, flu symptoms, or chickenpox. Salicylates can cause Reye's syndrome, a serious and sometimes fatal condition in children.

Ask a doctor or pharmacist if this medicine is safe to use if you have ever had:

  • bleeding problems;
  • heartburn, stomach ulcer, or stomach bleeding;
  • asthma;
  • heart disease, high blood pressure;
  • liver disease, cirrhosis, or if you drink more than 3 alcoholic beverages per day;
  • kidney disease;
  • arthritis, gout; or
  • diabetes.

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

If you are pregnant, you should not take this medicine unless your doctor tells you to. Taking an NSAID during the last 20 weeks of pregnancy can cause serious heart or kidney problems in the unborn baby and possible complications with your pregnancy.

This section was rewritten for readability and reviewed for meaning.

Nuprin Backache side effects

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.

Nuprin Backache may cause serious side effects. Stop using Nuprin Backache and call your doctor right away 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. You may report side effects to FDA at 1-800-FDA-1088.

This section was rewritten for readability and reviewed for meaning.

What happens if I miss a dose?

Since Nuprin Backache is used as needed, you might not have a regular dosing schedule. If you miss a dose and it’s nearly time for your next dose, just skip the missed dose. Do not take two doses at the same time.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of magnesium salicylate can be fatal.

Avoid alcohol. Heavy drinking can increase your risk of stomach bleeding.

Ask a doctor or pharmacist before using other medicines for pain, fever, swelling, or cold/flu symptoms. They may contain ingredients similar to Nuprin Backache (such as aspirin, ibuprofen, ketoprofen, or naproxen).

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect Nuprin Backache?

Ask a doctor or pharmacist if it is safe for you to use Nuprin Backache if you are also using:

  • medicine to treat gout or arthritis;
  • insulin or oral diabetes medicine; or
  • other NSAIDs (nonsteroidal anti-inflammatory drugs)--aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indomethacin, meloxicam, and others;
  • a blood thinner--warfarin, Coumadin, Jantoven;

This list is not complete. Other drugs may affect Nuprin Backache, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

This section was rewritten for readability and reviewed for meaning.

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
General medicine information Consumer-friendly language

Content is provided for education and is not medical advice. See our medical disclaimer.