Indomethacin Patient Tips
Medically reviewed on Nov 8, 2017 by C. Fookes, BPharm.
How it works
- Indomethacin helps relieve pain and inflammation by blocking the effects of the enzymes cyclooxygenase (COX)-1 and COX-2. This prevents prostaglandin synthesis (prostaglandins elevate body temperature and make nerve endings more sensitive to pain transmission).
- Indomethacin belongs to a group of medicines known as NSAIDs (nonsteroidal anti-inflammatory drugs).
- Effective for the relief of pain and inflammation associated with osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, acute painful shoulder (bursitis or tendonitis), and acute gouty arthritis.
- NSAIDs (including indomethacin) are considered first-line options for mild-to-moderate acute pain because at correct dosages they are effective, do not cause dependence and are readily available at a low cost.
- Available as immediate-release capsules and suspension, extended-release capsules, and as a suppository.
- Generic indomethacin is available.
If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include:
- Indigestion, heartburn, and very occasionally, stomach ulceration and bleeding. People of an older age, taking other medicines that affect the stomach, or who drink more than 3 glasses of alcohol per day may be more at risk. People of an older age, taking other medicines that affect the stomach, or who drink more than 3 glasses of alcohol per day may be more at risk. Indomethacin is considered to carry a high risk for stomach-related side effects compared with other NSAIDs.
- A headache is also a common side effect. Other side effects include tinnitus (continuous ringing or buzzing in the ears), constipation, and difficulty concentrating.
- Indomethacin is one of the most potent NSAIDs and is generally only used after other NSAIDs have proved ineffective.
- NSAIDs (including indomethacin) have been associated with an increased risk of stroke or heart attack. The risk may be higher in patients with pre-existing cardiovascular conditions and with higher dosages. Indomethacin is considered to carry a high risk for cardiovascular-related side effects compared with other NSAIDs.
- Oral and rectal preparations are not available over-the-counter (have to be prescribed).
- May not be suitable for some people including those with kidney disease, a history of stomach ulcers or other gastrointestinal disorders, with pre-existing cardiovascular disease, or following coronary artery bypass graft surgery. Should not be used by children aged less than 14 years and during pregnancy.
- May interact with some other medicines such as warfarin, SSRIs, ACE inhibitors, and diuretics.
Notes: In general, seniors or children, people with certain medical conditions (such as liver or kidney problems, heart disease, diabetes, seizures) or people who take other medications are more at risk of developing a wider range of side effects. For a complete list of all side effects, click here.
- Take with food to reduce stomach-related adverse effects.
- Always use the lowest effective dose for the shortest duration consistent with the condition being treated.
- Response to different NSAIDs can vary so switching types (for example, from indomethacin to naproxen) may improve response.
- Talk to your doctor if you experience any abdominal pain after taking indomethacin, particularly if the pain persists.
- NSAIDs such as indomethacin should not be used in the last 3 months of pregnancy; ask your doctor before using any medication during pregnancy.
- Do not take NSAIDs such as indomethacin or aspirin if you have experienced asthma or hives due to NSAID use in the past.
- If you are taking indomethacin and find it is not working very well for you, you may like to try a different NSAID.
- Do not use this medicine immediately following heart bypass surgery (coronary artery bypass graft, or CABG).
- See a doctor immediately if you experience any difficulty with breathing, unexplained sickness or fatigue, loss of appetite, vision changes, fluid retention or abnormal bleeding.
Response and Effectiveness
- Peak levels are reached 2 hours after administration, and 90% of a dose is absorbed within 4 hours of administration.
- Indomethacin is approximately 10 times as potent as aspirin.
- Indomethacin [Package Insert]. Revised 08/2017. Jubilant Cadista Pharmaceuticals Inc. https://www.drugs.com/pro/indomethacin.html
- Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) Comparison. Oct 2017. eMedexpert http://www.emedexpert.com/compare/nsaids.shtml#differences
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- Drug class: nonsteroidal anti-inflammatory agents
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- Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use indomethacin only for the indication prescribed.
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