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Medications and Drugs

Brand Names: Nalfon

Generic Name: fenoprofen (Pronunciation: fen oh PROE fen)

What is fenoprofen (Nalfon)?

Fenoprofen is in a group of drugs called nonsteroidal anti-inflammatory drugs (NSAIDs). Fenoprofen works by reducing hormones that cause inflammation and pain in the body.

Fenoprofen is used to treat pain or inflammation caused by arthritis.

Fenoprofen may also be used for other purposes not listed in this medication guide.

Fenoprofen 600 mg-IVA

oblong, orange, imprinted with 600, Z LOGO 4141

Fenoprofen 600 mg-MYL

oval, orange, imprinted with M471

Fenoprofen 600 mg-PP

oblong, yellow, imprinted with R317

What are the possible side effects of fenoprofen (Nalfon)?

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

Stop taking fenoprofen and seek medical attention or call your doctor at once if you have any of these serious side effects:

  • chest pain, weakness, shortness of breath, slurred speech, problems with vision or balance;
  • black, bloody, or tarry stools, coughing up blood or vomit that looks like coffee grounds;
  • confusion, tremors or shaking;
  • urinating less than usual or not at all;
  • pain, burning, or bleeding when you urinate;
  • nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • fever, sore throat, and headache with a severe blistering, peeling, and red skin rash; or
  • bruising, severe tingling, numbness, pain, muscle weakness.

Less serious side effects may include:

  • upset stomach, mild heartburn or stomach pain, diarrhea, constipation; bloating, gas;
  • dizziness, headache, nervousness;
  • skin itching or rash;
  • dry mouth;
  • increased sweating, runny nose;
  • blurred vision; or
  • ringing in your ears.

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.

What is the most important information I should know about fenoprofen (Nalfon)?

This medicine can increase your risk of life-threatening heart or circulation problems, including heart attack or stroke. Do not use this medicine just before or after having heart bypass surgery (also called coronary artery bypass graft, or CABG).

Seek emergency medical help if you have symptoms of heart or circulation problems, such as chest pain, weakness, shortness of breath, slurred speech, or problems with vision or balance.

This medicine can also increase your risk of serious effects on the stomach or intestines, including bleeding or perforation (forming of a hole). These conditions can be fatal and gastrointestinal effects can occur without warning at any time while you are taking fenoprofen. Older adults may have an even greater risk of these serious gastrointestinal side effects.

Call your doctor at once if you have symptoms of bleeding in your stomach or intestines. This includes black, bloody, or tarry stools, or coughing up blood or vomit that looks like coffee grounds.



Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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