Aspirin is a salicylate (sa-LIS-il-ate). It works by reducing substances in the body that cause pain, fever, and inflammation.

Aspirin is used to treat pain, and reduce fever or inflammation. It is sometimes used to treat or prevent heart attacks, strokes, and chest pain (angina).

Aspirin should be used for cardiovascular conditions only under the supervision of a doctor.

You should not use aspirin if you have a bleeding disorder such as hemophilia, a recent history of stomach or intestinal bleeding, or if you are allergic to an NSAID (non-steroidal anti-inflammatory drug) such as Advil, Motrin, Aleve, Orudis, Indocin, Lodine, Voltaren, Toradol, Mobic, Relafen, Feldene, and others.

Do not give this medication to a child or teenager with a fever, flu symptoms, or chickenpox. Salicylates can cause Reye's syndrome, a serious and sometimes fatal condition in children.

Prescription aspirin comes as an extended-release (long-acting) tablet. Nonprescription aspirin comes as a regular tablet, a delayed-release (releases the medication in the intestine to prevent damage to the stomach) tablet, a chewable tablet, powder, and a gum to take by mouth. Prescription aspirin is usually taken two or more times a day. Nonprescription aspirin is usually taken once a day to lower the risk of a heart attack or stroke. Nonprescription aspirin is usually taken every 4 to 6 hours as needed to treat fever or pain. Follow the directions on the package or prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take aspirin exactly as directed. Do not take more or less of it or take it more often than directed by the package label or prescribed by your doctor.

Swallow the extended-release tablets whole with a full glass of water. Do not break, crush, or chew them.

Swallow the delayed-release tablets with a full glass of water.

Chewable aspirin tablets may be chewed, crushed, or swallowed whole. Drink a full glass of water, immediately after taking these tablets.

Ask a doctor before you give aspirin to your child or teenager. Aspirin may cause Reye's syndrome (a serious condition in which fat builds up on the brain, liver, and other body organs) in children and teenagers, especially if they have a virus such as chicken pox or the flu.

If you have had oral surgery or surgery to remove your tonsils in the last 7 days, talk to your doctor about which types of aspirin are safe for you.

Delayed-release tablets begin to work some time after they are taken. Do not take delayed-release tablets for fever or pain that must be relieved quickly.

Stop taking aspirin and call your doctor if your fever lasts longer than 3 days, if your pain lasts longer than 10 days, or if the part of your body that was painful becomes red or swollen. You may have a condition that must be treated by a doctor.

Take aspirin exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Always follow directions on the medicine label about giving aspirin to a child.

Take with food if aspirin upsets your stomach.

You must chew the chewable tablet before you swallow it.

Do not crush, chew, break, or open an enteric-coated or delayed/extended-release pill. Swallow the pill whole.

If you need surgery, tell the surgeon ahead of time that you are using this medicine. You may need to stop using it for a short time.

Do not use aspirin if you smell a strong vinegar odor in the bottle. The medicine may no longer be effective.

Store at room temperature away from moisture and heat.

Do not give this medicine to a child or teenager with a fever, flu symptoms, or chickenpox. Aspirin can cause Reye's syndrome, a serious and sometimes fatal condition in children.

You should not use aspirin if you are allergic to it, or if you have:

• a recent history of stomach or intestinal bleeding;

• a bleeding disorder such as hemophilia; or

• if you have ever had an asthma attack or severe allergic reaction after taking aspirin or an NSAID (non-steroidal anti-inflammatory drug) such as Advil, Motrin, Aleve, Orudis, Indocin, Lodine, Voltaren, Toradol, Mobic, Relafen, Feldene, and others.

To make sure this medicine is safe for you, tell your doctor if you have:

• asthma or seasonal allergies;

• stomach ulcers;

• liver disease;

• kidney disease;

• a bleeding or blood clotting disorder;

• gout; or

• heart disease, high blood pressure, or congestive heart failure.

Taking aspirin during late pregnancy may cause bleeding in the mother or the baby during delivery. Tell your doctor if you are pregnant or plan to become pregnant.

Aspirin can pass into breast milk and may harm a nursing baby. You should not breastfeed while using this medicine.

Since aspirin is used when needed, you may not be on a dosing schedule. If you are on a schedule, use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include stomach pain, vomiting, diarrhea, vision or hearing problems, fast or slow breathing, or confusion.

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Dispose of any tablets that have a strong vinegar smell.

It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. http://www.upandaway.org

Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website (http://goo.gl/c4Rm4p) for more information if you do not have access to a take-back program.

Unless your doctor tells you otherwise, continue your normal diet.

Avoid drinking alcohol while you are taking aspirin. Heavy drinking can increase your risk of stomach bleeding.

If you are taking this medicine to prevent heart attack or stroke, avoid also taking ibuprofen (Advil, Motrin). Ibuprofen may make this medicine less effective in protecting your heart and blood vessels. If you must use both medications, ask your doctor how far apart your doses should be.

Ask a doctor or pharmacist before using any cold, allergy, or pain medication. Many medicines available over the counter contain aspirin or an NSAID. Taking certain products together can cause you to get too much of this type of medication. Check the label to see if a medicine contains aspirin, ibuprofen, ketoprofen, naproxen, or an NSAID.

Get emergency medical help if you have signs of an allergic reaction to aspirin: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Aspirin may cause serious side effects. Stop using this medicine and call your doctor at once if you have:

• ringing in your ears, confusion, hallucinations, rapid breathing, seizure (convulsions);

• severe nausea, vomiting, or stomach pain;

• bloody or tarry stools, coughing up blood or vomit that looks like coffee grounds;

• fever lasting longer than 3 days; or

• swelling, or pain lasting longer than 10 days.

Common side effects of aspirin may include:

• upset stomach;
• heartburn;
• drowsiness; or
• mild headache.

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.

Ask your doctor before using aspirin if you take an antidepressant such as citalopram, escitalopram, fluoxetine (Prozac), fluvoxamine, paroxetine, sertraline (Zoloft), trazodone, or vilazodone. Taking any of these medicines with an NSAID may cause you to bruise or bleed easily.

Ask a doctor or pharmacist if it is safe for you to use this medicine if you are also using any of the following drugs:

• a blood thinner (warfarin, Coumadin, Jantoven), or other medication used to prevent blood clots; or

• other salicylates such as Nuprin Backache Caplet, Kaopectate, KneeRelief, Pamprin Cramp Formula, Pepto-Bismol, Tricosal, Trilisate, and others.

This list is not complete. Other drugs may interact with aspirin, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.

Keep all appointments with your doctor.

If you are taking prescription aspirin, do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

For common ailments like headaches, you may start to feel better within about 20 to 30 minutes after taking aspirin.

Depending on your condition, you might only take aspirin for a day or two. Some people take aspirin as a long-term treatment. Be sure to talk to your doctor if you plan to use aspirin for longer than three days.

Your dosage of aspirin will depend on your medical condition, the strength of the medicine, and other factors.

For pain, aspirin is typically taken every four to six hours, as needed.

Your doctor may adjust your dose or recommend that you don’t take this medicine if you have liver disease.

Aspirin is used to treat a wide variety of ailments. Your doctor may recommend it for conditions that aren’t listed in this medical guide.

• Alka-Seltzer® (containing Aspirin, Citric Acid, Sodium Bicarbonate)
• Alka-Seltzer® Extra Strength (containing Aspirin, Citric Acid, Sodium Bicarbonate)
• Alka-Seltzer® Morning Relief (containing Aspirin, Caffeine)
• Alka-Seltzer® Plus Flu (containing Aspirin, Chlorpheniramine, Dextromethorphan)
• Alka-Seltzer® PM (containing Aspirin, Diphenhydramine)
• Alor® (containing Aspirin, Hydrocodone)
• Anacin® (containing Aspirin, Caffeine)
• Anacin® Advanced Headache Formula (containing Acetaminophen, Aspirin, Caffeine)
• Aspircaf® (containing Aspirin, Caffeine)
• Axotal® (containing Aspirin, Butalbital)
• Azdone® (containing Aspirin, Hydrocodone)
• Bayer® Aspirin Plus Calcium (containing Aspirin, Calcium Carbonate)
• Bayer® Aspirin PM (containing Aspirin, Diphenhydramine)
• Bayer® Back and Body Pain (containing Aspirin, Caffeine)
• BC Headache (containing Aspirin, Caffeine, Salicylamide)
• BC Powder (containing Aspirin, Caffeine, Salicylamide)
• Damason-P® (containing Aspirin, Hydrocodone)
• Emagrin® (containing Aspirin, Caffeine, Salicylamide)
• Endodan® (containing Aspirin, Oxycodone)
• Equagesic® (containing Aspirin, Meprobamate)
• Excedrin® (containing Acetaminophen, Aspirin, Caffeine)
• Excedrin® Back & Body (containing Acetaminophen, Aspirin)
• Goody's® Body Pain (containing Acetaminophen, Aspirin)
• Levacet® (containing Acetaminophen, Aspirin, Caffeine, Salicylamide)
• Lortab® ASA (containing Aspirin, Hydrocodone)
• Micrainin® (containing Aspirin, Meprobamate)
• Momentum® (containing Aspirin, Phenyltoloxamine)
• Norgesic® (containing Aspirin, Caffeine, Orphenadrine)
• Orphengesic® (containing Aspirin, Caffeine, Orphenadrine)
• Panasal® (containing Aspirin, Hydrocodone)
• Percodan® (containing Aspirin, Oxycodone)
• Robaxisal® (containing Aspirin, Methocarbamol)
• Roxiprin® (containing Aspirin, Oxycodone)
• Saleto® (containing Acetaminophen, Aspirin, Caffeine, Salicylamide)
• Soma® Compound (containing Aspirin, Carisoprodol)
• Soma® Compound with Codeine (containing Aspirin, Carisoprodol, Codeine)
• Supac® (containing Acetaminophen, Aspirin, Caffeine)
• Synalgos-DC® (containing Aspirin, Caffeine, Dihydrocodeine)
• Talwin® Compound (containing Aspirin, Pentazocine)
• Vanquish® (containing Acetaminophen, Aspirin, Caffeine)