Taking an NSAID 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 this medicine 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 diflunisal, or if you have a history of allergic reaction to aspirin or other NSAIDs.
Before taking naproxen, tell your doctor if you are allergic to any drugs, or if you have:
-
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 diflunisal during the last 3 months of pregnancy may result in birth defects. Do not take diflunisal during pregnancy unless your doctor has told you to.
Diflunisal can pass into breast milk and could cause harm to 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 younger than 12 years old without the advice of a doctor.
Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.
Take this medicine with a full glass (8 ounces) of water.
Take diflunisal with food or milk to lessen stomach upset.
If you take diflunisal for a long period of time, your doctor may want to check you on a regular basis to make sure this medication is not causing harmful effects. Do not miss any scheduled visits to your doctor.
This medication can cause you to have unusual results with certain medical tests. Tell any doctor who treats you that you are using diflunisal.
Store diflunisal at room temperature away from moisture and heat.
Since diflunisal is sometimes taken as needed, you may not be on a dosing schedule. If you are taking the medication regularly, take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
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 diflunisal and 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
-
fever, headache, neck stiffness, chills, increased sensitivity to light, purple spots on the skin, and/or seizure (convulsions).
Less serious side effects include:
-
mild nausea, upset stomach, mild heartburn or stomach pain, diarrhea, constipation;
-
bloating, gas;
-
dizziness, headache, tired feeling;
-
sleep problems (insomnia);
-
skin itching or rash;
-
blurred vision; or
-
ringing in your ears.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
This medicine can increase your risk of life-threatening heart or circulation problems, including heart attack or stroke. This risk will increase the longer you use diflunisal. 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 diflunisal. 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.
If you drink more than three alcoholic beverages per day, do not take this medication without your doctor’s advice.
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 diflunisal (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, or ketoprofen.
Do not drink alcohol while taking diflunisal. Alcohol can increase the risk of stomach bleeding caused by diflunisal.
Avoid exposure to sunlight or artificial UV rays (sunlamps or tanning beds). Diflunisal can make your skin more sensitive to sunlight and sunburn may result. Use a sunscreen (minimum SPF 15) and wear protective clothing if you must be out in the sun.
Avoid using antacids without your doctor’s advice. Taking antacids frequently can make it harder for your body to absorb diflunisal.
Before taking diflunisal, tell your doctor if you are using any of the following drugs:
-
acetaminophen (Tylenol);
-
a blood thinner such as warfarin (Coumadin);
-
cyclosporine (Gengraf, Neoral, Sandimmune);
-
diuretics (water pills) such as furosemide (Lasix);
-
lithium (Eskalith, Lithobid);
-
methotrexate (Rheumatrex, Trexall);
-
an ACE inhibitor such as benazepril (Lotensin), captopril (Capoten), fosinopril (Monopril), enalapril (Vasotec), lisinopril (Prinivil, Zestril), moexipril (Univasc), perindopril (Aceon), quinapril (Accupril), ramipril (Altace), or trandolapril (Mavik); or
-
aspirin or other NSAIDs (non-steroidal anti-inflammatory drugs) such as diclofenac (Voltaren), etodolac (Lodine), flurbiprofen (Ansaid), ibuprofen (Advil, Motrin), ketoprofen (Orudis), ketorolac (Toradol), mefenamic acid (Ponstel), meloxicam (Mobic), nabumetone (Relafen), naproxen (Aleve, Naprosyn), piroxicam (Feldene), and others.
If you are using any of these drugs, you may not be able to take diflunisal, or you may need dosage adjustments or special tests during treatment.
There may be other drugs not listed that can affect diflunisal. 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.
Seek emergency medical attention if you think you have used too much of this medicine. Symptoms of a diflunisal overdose may include nausea, vomiting, diarrhea, sweating, gasping, fast heart rate, extreme drowsiness, fainting, or coma.
