Flanax Pain Reliever Tablets
Generic Name: naproxen sodium
Brand Names: Flanax
Medically reviewed by Sanjai Sinha, MD Last updated on Apr 7, 2019.
What is Flanax?
Flanax Pain Reliever Tablets contain naproxen sodium. Naproxen is a nonsteroidal anti-inflammatory drug (NSAID).
Flanax Pain Reliever Tablets can also be used to treat pain associated with a common cold and certain symptoms of arthritis and menstrual cramps.
Before taking this medicine
You should not take Flanax Pain Reliever Tablets when you:
- Are age 65 or older
- Have had stomach ulcers or bleeding problems
- Take a blood thinning (anticoagulant) or steroid drug
- Take other drugs containing an NSAID (aspirin, ibuprofen, naproxen, or others)
- Have three or more alcoholic drinks every day while using this product
- Have ever had an allergic reaction to any other pain reliever/fever reducer
- Are about to receive heart surgery or recently received one
How should I take Flanax Pain Reliever Tablets?
- For adults and children 12 years and older, take one Flanax tablet every 8 to 12 hours while symptoms last. For the first dose you may take two tablets within the first hour.
- Do not exceed two Flanax Pain Reliever Tablets in any 8 to 12 hour period.
- Do not exceed three tablets in a 24-hour period.
- Adults over 65 years old cannot take more than one Flanax tablet every 12 hours unless directed by a doctor.
- For using Flanax Pain Reliever with children under 12 years old, always ask a doctor first.
Flanax side effects
Get emergency medical help if you have any of these signs of an allergic reaction to Flanax: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop taking Flanax 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;
swelling or rapid weight gain;
urinating less than usual or not at all;
nausea, upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
bruising, severe tingling, numbness, pain, muscle weakness;
fever, headache, neck stiffness, chills, increased sensitivity to light, purple spots on the skin, and/or seizure (convulsions) or
severe skin reaction -- fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.
Less serious Flanax side effects may include:
upset stomach, mild heartburn or stomach pain, diarrhea, constipation;
dizziness, headache, nervousness;
skin itching or rash;
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.
See also: Naproxen side effects (in more detail)
Each Flanax Pain Reliever Tablet conatains naproxen sodium 220 mg (naproxen 200mg).
Each Flanax Pain Reliever Tablet contains: sodium 20 mg, store at 20-25°C (68-77°F). Avoid high humidity and excessive heat above 40°C (104°F).
- FD&C blue no. 2
- Magnesium stearate
- Microcrystalline cellulose
- Polyethylene glycol
- Titanium dioxide
- Polysorbate 80
Copyright 1996-2019. Version: 6.01.DDC
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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More about Flanax Pain Reliever (naproxen)
- Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Imprints, Shape & Color Data
- Drug Interactions
- En Español
- 1 Review
- Drug class: Nonsteroidal anti-inflammatory drugs
- FDA Alerts (7)