Diclofenac can increase your risk of life-threatening heart or circulation problems, including heart attack or stroke. This risk will increase the longer you use diclofenac. 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.

Diclofenac 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 diclofenac. 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.

Do not use any other over-the-counter cold, allergy, or pain medication without first asking your doctor or pharmacist. Many medicines available over the counter contain aspirin or other medicines similar to diclofenac (such as ibuprofen, ketoprofen, or naproxen). If you take certain products together you may accidentally take too much of this type of medication. Read the label of any other medicine you are using to see if it contains aspirin, ibuprofen, ketoprofen, or naproxen. Do not drink alcohol while taking diclofenac. Alcohol can increase the risk of stomach bleeding caused by diclofenac.

Taking an NSAID such as diclofenac can increase your risk of life-threatening heart or circulation problems, including heart attack or stroke. This risk will increase the longer you use an NSAID. Do not use diclofenac just before or after having heart bypass surgery (also called coronary artery bypass graft, or CABG).

NSAIDs 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 an NSAID. Older adults may have an even greater risk of these serious gastrointestinal side effects.

Do not use this medication if you are allergic to diclofenac, or if you have a history of allergic reaction to aspirin or other NSAIDs.

If you have any of these other conditions, you may need a dose adjustment or special tests to safely take diclofenac:

*

a history of heart attack, stroke, or blood clot;
*

heart disease, congestive heart failure, high blood pressure;
*

a history of stomach ulcers or bleeding;
* liver or kidney disease,
*

asthma;
*

polyps in your nose;
*

a bleeding or blood clotting disorder; or
*

if you smoke.

FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment. Taking diclofenac during the last 3 months of pregnancy may harm the unborn baby. Do not take diclofenac during pregnancy unless your doctor has told you to. Diclofenac can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby. Do not give this medicine to a child without the advice of a doctor.

Diclofenac side effects

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 diclofenac 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, 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;
*

bruising, severe tingling, numbness, pain, muscle weakness; or
*

neck stiffness, chills, increased sensitivity to light, purple spots on the skin, and/or seizure (convulsions).

Less serious diclofenac side effects may include:

*

upset stomach, mild heartburn or stomach pain, diarrhea, constipation, bloating, gas;
*

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.

What other drugs will affect diclofenac?

Tell your doctor if you are taking an antidepressant such as citalopram (Celexa), duloxetine (Cymbalta), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem, Symbyax), fluvoxamine (Luvox), paroxetine (Paxil), sertraline (Zoloft), or venlafaxine (Effexor). Taking any of these drugs with diclofenac may cause you to bruise or bleed easily.

Tell your doctor about all other medications you use, especially:

*

a blood thinner such as warfarin (Coumadin);
*

cyclosporine (Neoral, Sandimmune);
*

lithium (Eskalith, Lithobid);
*

methotrexate (Rheumatrex, Trexall);
*

diuretics (water pills) such as furosemide (Lasix).
*

steroids (prednisone and others);
*

aspirin or other NSAIDs such as ibuprofen (Motrin, Advil), diclofenac (Cataflam, Voltaren), etodolac (Lodine), indomethacin (Indocin), meloxicam (Mobic), nabumetone (Relafen), naproxen (Aleve, Naprosyn), piroxicam (Feldene), and others; or
*

an ACE inhibitor such as benazepril (Lotensin), enalapril (Vasotec), fosinopril (Monopril), lisinopril (Prinivil, Zestril), quinapril (Accupril), ramipril (Altace), and others.

This list is not complete and there may be other drugs that can interact with diclofenac. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.