Indomethacin

Indomethacin- A nonsteroidal anti-inflammatory drug (NSAID) used in Bartter’s syndrome to help improve growth in children and decrease urinary potassium excretion.

The vascular action of angiotensin II also activates the phosphatidylinositol pathway, increasing the release of diacylglycerol, which leads to the release of arachadonic acid, and can increase the production of prostaglandins. Bartter’s syndrome is associated with an increase in the renal excretion of the vasodilating prostaglandin E2, which may help mediate the vasoconstrictive effects of angiotensin. Hypokalemia also induces prostaglandin production.

Why is this medication prescribed?

Indomethacin is used to relieve moderate to severe pain, tenderness, swelling, and stiffness caused by osteoarthritis (arthritis caused by a breakdown of the lining of the joints), rheumatoid arthritis (arthritis caused by swelling of the lining of the joints), and ankylosing spondylitis (arthritis that mainly affects the spine). Indomethacin is also used to treat pain in the shoulder caused by bursitis (inflammation of a fluid-filled sac in the shoulder joint) and tendinitis (inflammation of the tissue that connects muscle to bone). Indomethacin immediate-release capsules, suspension (liquid) and suppositories are also used to treat acute gouty arthritis (attacks of severe joint pain and swelling caused by a build-up of certain substances in the joints). Indomethacin is in a class of medications called NSAIDs. It works by stopping the body’s production of a substance that causes pain, fever, and inflammation. NSAIDS should generally be avoided in adult patients unless there is inadequate response to other agents.

How should this medicine be used?

Indomethacin comes as a capsule, an extended-release (long-acting) capsule, and a suspension to take by mouth and as a suppository to be used rectally. Indomethacin capsules, liquid, and suppositories usually are taken two to four times a day. Extended-release capsules are usually taken one or two times a day. Indomethacin capsules, extended release capsules, and suspension should be taken with food, immediately after meals, or with antacids. Take indomethacin at around the same times every day.Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take indomethacin exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Swallow the extended-release capsules whole; do not split, chew, or crush them.

Shake the suspension well before each use to mix the medication evenly.

Your doctor may change the dose of your medication during your treatment. In some cases, your doctor may start you on a low dose of indomethacin and gradually increase your dose, not more often than once a week. In other cases, your doctor may start you on an average dose of indomethacin and decrease your dose once your symptoms are controlled. Follow these directions carefully and ask your doctor or pharmacist if you have any questions.

To use indomethacin suppositories , follow these steps:

  • Remove the wrapper.
  • Dip the tip of the suppository in water.
  • Lie down on your left side and raise your right knee to your chest. (A left-handed person should lie on the right side and raise the left knee.)
  • Using your finger, insert the suppository about 1 inch into the rectum. Hold it in place for a few moments.
  • Stand up after about 15 minutes. Wash your hands thoroughly and resume your normal activities.
  • You should try to keep the suppository in place and avoid having a bowel movement for 1 hour after you insert the suppository.

Other uses for this medicine

Indomethacin is also sometimes used to relieve fever, pain, and inflammation caused by many types of conditions or injuries, to reduce the amount of calcium in the blood, and to treat a certain type of low blood pressure Talk to your doctor about the risks of using this medication for your condition.

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

What special precautions should I follow?

Before taking indomethacin,

  • tell your doctor and pharmacist if you are allergic to indomethacin, aspirin or other NSAIDs such as ibuprofen (Advil, Motrin) and naproxen (Aleve, Naprosyn), any other medications, or any of the inactive ingredients in indomethacin capsules, suspension, extended release capsules, or suppositories. Ask your pharmacist for a list of the inactive ingredients.
  • tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention the medications listed in the IMPORTANT WARNING section and any of the following: angiotensin-converting enzyme (ACE) inhibitors such as benazepril (Lotensin), captopril (Capoten), enalapril (Vasotec), fosinopril (Monopril), lisinopril (Prinivil, Zestril), moexipril (Univasc), perindopril (Aceon), quinapril (Accupril), ramipril (Altace), and trandolapril (Mavik);angiotensin II receptor antagonists such as candesartan (Atacand), eprosartan (Teveten), irbesartan (Avapro), losartan (Cozaar), olmesartan (Benicar), telmisartan (Micardis), and valsartan (Diovan); beta blockers such as atenolol (Tenormin), labetalol (Normodyne), metoprolol (Lopressor, Toprol XL), nadolol (Corgard), and propranolol (Inderal); cyclosporine (Neoral, Sandimmune); digoxin (Lanoxin); diuretics (‘water pills’) such as triamterene (Dyrenium, in Dyazide); lithium (Eskalith, Lithobid); methotrexate (Rheumatrex); phenytoin (Dilantin); and probenecid (Benemid);.
  • tell your doctor if you have or have ever had asthma, especially if you also have frequent stuffed or runny nose or nasal polyps (swelling of the lining of the nose); seizures; Parkinson’s disease; depression or mental illness; or liver or kidney disease. If you will be using indomethacin suppositories, also tell your doctor if you have or have ever had proctitis (inflammation of the rectum) or have or have recently had rectal bleeding.
  • tell your doctor if you are pregnant especially if you are in the last few months of your pregnancy, you plan to become pregnant, or you are breast-feeding. If you become pregnant while taking indomethacin, call your doctor.
  • if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking indomethacin.
  • you should know that this medication may make you drowsy. Do not drive a car or operate machinery until you know how this medication affects you.
  • remember that alcohol can add to the drowsiness caused by this medication.
  • Although there are reports of indomethacin in newborns with Bartter’s syndrome without problems, a study of 36 newborns treated with indomethacin for persistent patent ductus arteriosus, reported 3 with necrotizing enterocolitis. However a case report describes no complications following indomethacin use for a fetus with polyhydramnios during weeks 26-31 and the indomethacin prevented further fluid accumulation.

What special dietary instructions should I follow?

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

What should I do if I forget a dose?

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

What side effects can this medication cause?

Indomethacin may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

  • headache
  • dizziness
  • vomiting
  • diarrhea
  • constipation
  • irritation of the rectum
  • constant feeling of the need to empty the bowel
  • ringing in the ears

Some side effects can be serious. If you experience any of the following symptoms or those mentioned in the IMPORTANT WARNING section, call your doctor immediately. Do not take any more indomethacin until you speak to your doctor.

  • unexplained weight gain
  • fever
  • blisters
  • rash
  • itching
  • hives
  • swelling of the eyes, face, tongue, lips, throat, hands, feet, ankles, or lower legs
  • difficulty breathing or swallowing
  • hoarseness
  • pale skin
  • fast heartbeat
  • excessive tiredness
  • unusual bleeding or bruising
  • lack of energy
  • upset stomach
  • loss of appetite
  • pain in the upper right part of the stomach
  • flu-like symptoms
  • yellowing of the skin or eyes
  • cloudy, discolored, or bloody urine
  • back pain
  • difficult or painful urination
  • blurred vision or other problems with sight

Indomethacin may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration’s (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/MedWatch/report.htm] or by phone [1-800-332-1088].

What storage conditions are needed for this medicine?

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). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.

In case of emergency/overdose

In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.

Symptoms of overdose may include:

  • upset stomach
  • vomiting
  • headache
  • dizziness
  • confusion
  • extreme tiredness
  • feeling of numbness, pricking, burning, or creeping on the skin
  • seizures

What other information should I know?

Before having any laboratory test, tell your doctor and the laboratory personnel that you are taking indomethacin.

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

Brand name(s):

  • IndocinĀ®
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