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Nabumetone Side Effects

For the Consumer

Applies to nabumetone: oral tablet

Along with its needed effects, nabumetone may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking nabumetone:

More common
  • Headache
  • itching skin
  • nausea
  • rash
  • stomach pain
  • swelling
Less common
  • Burning feeling in chest or stomach
  • indigestion
  • stomach upset
  • swelling or inflammation of the mouth
  • tenderness in stomach area
  • vomiting
  • Bleeding gums
  • blistering, peeling, loosening of skin
  • bloody or black, tarry stools
  • bloody or cloudy urine
  • burning upper abdominal pain
  • changes in vision
  • chest pain
  • chills
  • clay-colored stools
  • constipation
  • cough
  • dark-colored urine
  • diarrhea
  • difficult or labored breathing
  • difficulty swallowing
  • dizziness
  • dry cough
  • dry mouth
  • fast heartbeat
  • fever
  • fluid-filled skin blisters
  • general feeling of tiredness or weakness
  • greatly decreased frequency of urination or amount of urine
  • high blood pressure
  • hives or welts
  • increased sensitivity of skin to sunlight
  • increased thirst
  • joint pain, stiffness, or swelling
  • large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, sex organs
  • light-colored stools
  • loss of appetite
  • muscle pain
  • pain in lower back or side
  • pinpoint red spots on skin
  • puffiness or swelling of the eyelids or around the eyes, face, lips or tongue
  • rapid breathing
  • red irritated eyes
  • red skin lesions, often with a purple center
  • redness or other discoloration of skin
  • severe or continuing stomach pain
  • severe sunburn
  • shortness of breath
  • skin thinness
  • sore throat
  • sores, ulcers, or white spots in mouth or on lips
  • stomach bloating, burning, or cramping
  • swelling of face, fingers, feet or lower legs
  • tightness in chest
  • unpleasant breath odor
  • unusual bleeding or bruising
  • unusual tiredness or weakness
  • vaginal bleeding
  • vomiting of blood or material that looks like coffee grounds
  • weight gain or loss
  • wheezing
  • yellow eyes or skin
Symptoms of overdose
  • Agitation
  • blurred vision
  • coma
  • confusion
  • depression
  • hostility
  • irregular, fast or slow, or shallow breathing
  • irritability
  • muscle twitching
  • nervousness
  • pain or discomfort in chest, upper stomach, or throat
  • pale or blue lips, fingernails, or skin
  • pounding in the ears
  • seizures
  • severe stomach pain
  • slow heartbeat
  • stupor
  • unusual drowsiness, dullness, or feeling of sluggishness

Some side effects of nabumetone may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common
  • Acid or sour stomach
  • belching
  • bloated full feeling
  • continuing ringing or buzzing or other unexplained noise in ears
  • excess air or gas in stomach or intestines
  • hearing loss
  • indigestion
  • mild diarrhea
  • passing gas
Less common
  • Increased sweating
  • sleepiness or unusual drowsiness
  • sleeplessness
  • trouble sleeping
  • unable to sleep
  • Anxiety
  • burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  • feeling of constant movement of self or surroundings
  • general feeling of discomfort or illness
  • increased appetite
  • lack or loss of strength
  • lightheadedness
  • sensation of spinning
  • shakiness in legs, arms, hands, feet
  • trembling or shaking of hands or feet

For Healthcare Professionals

Applies to nabumetone: oral tablet


Very common (10% or more): Diarrhea (14%), dyspepsia (13%), abdominal pain (12%)
Common (1% to 10%): Constipation, flatulence, nausea, positive stool guaiac, dry mouth, gastritis, stomatitis, vomiting
Uncommon (0.1% to 1%): Duodenal ulcer, GI bleeding, gastric ulcer, GI disorder, melena, stomatitis
Very rare (less than 0.01%): Pancreatitis
Frequency not reported: Anorexia, dysphagia, gastroenteritis, duodenitis, eructation, glossitis, rectal bleeding[Ref]


Uncommon (0.1% to 1%): Elevated liver function tests
Very rare (less than 0.01%): Hepatic failure, jaundice
Frequency not reported: Liver function abnormalities, gallstones[Ref]


Very rare (less than 0.01%): Renal failure, nephrotic syndrome
Frequency not reported: Albuminuria, azotemia, interstitial nephritis, renal stones[Ref]


Common (1% to 10%): Sweating increased, pruritus, rash
Uncommon (0.1% to 1%): Photosensitivity, urticaria
Very rare (less than 0.01%): Bullous eruptions, pseudoporphyria cutanea tarda, acne, alopecia, toxic epidermal necrolysis, erythema multiforme, Stevens-Johnson syndrome, angioedema
Frequency not reported: Purpura[Ref]


Very rare (less than 0.01%): Thrombocytopenia
Frequency not reported: Anemia, leukopenia, granulocytopenia, neutropenia, agranulocytosis, aplastic anemia, hemolytic anemia[Ref]


Very rare (less than 0.01%): Anaphylactoid reaction, anaphylaxis[Ref]

Nervous system

Common (1% to 10%): Dizziness, headache, somnolence
Uncommon (0.1% to 1%): Paresthesia
Frequency not reported: Tremor, syncope, drowsiness[Ref]


Common (1% to 10%): Insomnia, nervousness
Uncommon (0.1% to 1%): Confusion, anxiety
Frequency not reported: Agitation, depression, nightmares, hallucinations[Ref]


Common (1% to 10%): Hypertension/blood pressure increased
Frequency not reported: Vasculitis, angina, arrhythmia, myocardial infarction, palpitations, thrombophlebitis, cardiac failure[Ref]


Uncommon (0.1% to 1%): Dyspnea, respiratory disorder, epistaxis
Very rare (less than 0.01%): Interstitial pneumonitis
Frequency not reported: Asthma, cough, aggravated asthma, bronchospasm
Postmarketing reports: Eosinophilic pneumonia, hypersensitivity pneumonitis, idiopathic interstitial pneumonitis[Ref]


Common (1% to 10%): Fatigue, tinnitus, edema, ear disorder
Uncommon (0.1% to 1%): Asthenia, fatigue
Frequency not reported: Malaise, vertigo, weight gain, gingivitis, taste disorder, fever, chills, weight loss, aseptic meningitis[Ref]

Cases of aseptic meningitis have been reported, especially in patients with autoimmune disorders, such as systemic lupus erythematosus or mixed connective tissue disease. Symptoms have included stiff neck, headache, nausea, vomiting, fever, and disorientation.[Ref]


Uncommon (0.1% to 1%): Urinary tract disorder
Very rare (less than 0.01%): Menorrhagia
Frequency not reported: Bilirubinuria, dysuria, hematuria, impotence
Postmarketing reports: Vaginal bleeding[Ref]


Frequency not reported: Appetite increased, hyperglycemia, hypokalemia
Postmarketing reports: Hyperuricemia[Ref]


The most frequently reported adverse effects were gastrointestinal (GI) in nature and included diarrhea, dyspepsia, and abdominal pain.[Ref]


Uncommon (0.1% to 1%): Myopathy[Ref]


Uncommon (0.1% to 1%): Abnormal vision, eye disorder
Frequency not reported: Optic neuritis[Ref]


1. "Product Information. Relafen (nabumetone)." SmithKline Beecham, Philadelphia, PA.

2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

Some side effects of nabumetone may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.