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(piroxicam) Capsules



Cardiovascular Thrombotic Events

  • Nonsteroidal anti-inflammatory drugs (NSAIDs) cause an increased risk of serious cardiovascular thrombotic events, including myocardial infarction and stroke, which can be fatal. This risk may occur early in treatment and may increase with duration of use. [see WARNINGS AND PRECAUTIONS].
  • FELDENE is contraindicated in the setting of coronary artery bypass graft (CABG) surgery [see CONTRAINDICATION and WARNINGS AND PRECAUTIONS].

Gastrointestinal Bleeding, Ulceration, and Perforation

  • NSAIDs cause an increased risk of serious gastrointestinal (GI) adverse events including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal. These events can occur at any time during use and without warning symptoms. Elderly patients and patients with a prior history of peptic ulcer disease and/or GI bleeding are at greater risk for serious GI events [see WARNINGS AND PRECAUTIONS].


FELDENE (piroxicam) capsule is a nonsteroidal anti-inflammatory drug, available as maroon and blue #322 10 mg capsules and maroon #323 20 mg capsules for oral administration. The chemical name is 4-hydroxyl-2-methyl-N-2-pyridinyl-2H-1,2,-benzothiazine-3- carboxamide 1,1-dioxide. The molecular weight is 331.35. Its molecular formula is C15H13N3O4S, and it has the following chemical structure.

FELDENE (piroxicam) Structural Formula Illustration

Piroxicam occurs as a white crystalline solid, sparingly soluble in water, dilute acid, and most organic solvents. It is slightly soluble in alcohol and in aqueous solutions. It exhibits a weakly acidic 4-hydroxy proton (pKa 5.1) and a weakly basic pyridyl nitrogen (pKa 1.8).

The inactive ingredients in FELDENE include: Blue 1, Red 3, lactose, magnesium stearate, sodium lauryl sulfate, starch.

What are the possible side effects of piroxicam (Feldene)?

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 piroxicam 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...

Read All Potential Side Effects and See Pictures of Feldene »

What are the precautions when taking piroxicam (Feldene)?

Before taking piroxicam, tell your doctor or pharmacist if you are allergic to it; or to aspirin or other NSAIDs (such as ibuprofen, naproxen, celecoxib); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before taking this medication, tell your doctor or pharmacist your medical history, especially of: asthma (including a history of worsening breathing after taking aspirin or other NSAIDs), blood disorders (such as anemia, bleeding/clotting problems), growths in the nose (nasal polyps), heart disease (such as previous heart attack), high blood pressure, liver disease, stroke, throat/stomach/intestinal problems (such as bleeding, heartburn,...

Read All Potential Precautions of Feldene »

Last reviewed on RxList: 6/13/2016
This monograph has been modified to include the generic and brand name in many instances.

Feldene - User Reviews

Feldene User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Feldene sorted by most helpful. Patient Discussions FAQs

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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