The major side effect of indomethacin is gastrointestinal (GI) issues, which can include bleeding, ulceration, and perforation of the stomach or intestines [1]. These serious GI events can occur at any time during treatment and may not be preceded by warning symptoms [1].
Why are GI problems so common with indomethacin?
Indomethacin belongs to a class of drugs called nonsteroidal anti-inflammatory drugs (NSAIDs). NSAIDs work by inhibiting cyclooxygenase (COX) enzymes, which reduces the production of prostaglandins. Prostaglandins play a role in reducing inflammation and pain, but they also protect the stomach lining from acid. By reducing prostaglandin levels, indomethacin can weaken this protective barrier, making the GI tract more vulnerable to damage [1].
What other side effects can indomethacin cause?
Beyond GI complications, indomethacin can also lead to other adverse effects. These include central nervous system issues such as dizziness, drowsiness, and headache. Cardiovascular risks like increased blood pressure and fluid retention can also occur. Some patients may experience skin reactions or kidney problems [1].
How does indomethacin compare to other NSAIDs for side effects?
Indomethacin is generally considered to have a higher risk of gastrointestinal side effects compared to some other NSAIDs [1]. This is partly due to its potency and its mechanism of action. Patients who are at higher risk for GI bleeding, such as older adults or those with a history of ulcers, may be advised to use indomethacin cautiously or consider alternative medications [1].
Are there ways to reduce the risk of indomethacin side effects?
To mitigate the risk of GI side effects, healthcare providers may recommend taking indomethacin with food or milk [1]. In some cases, a proton pump inhibitor (PPI) or other stomach-protecting medication may be prescribed concurrently with indomethacin to help reduce the likelihood of ulcers and bleeding [1].
When should someone stop taking indomethacin due to side effects?
Patients should contact their doctor immediately if they experience any signs of GI bleeding, such as black, tarry stools, or vomiting blood or material that looks like coffee grounds [1]. Other warning signs include severe stomach pain, unexplained weight loss, or persistent nausea [1].
What is indomethacin used for?
Indomethacin is prescribed to treat various inflammatory conditions. It is commonly used for rheumatoid arthritis, osteoarthritis, gouty arthritis, ankylosing spondylitis, and acute bursitis or tendinitis [1]. It can also be used to close a patent ductus arteriosus in premature infants [1].
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**Sources
1. https://www.drugpatentwatch.com/drugs/indomethacin