Indomethacin Impurities

Indomethacin is used to treat inflammatory conditions including rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, acute gouty arthritis, and certain soft tissue disorders; it is also used by specialists to induce closure of a patent ductus arteriosus in premature infants.

Patients with active or recurrent peptic ulcer disease, a history of gastrointestinal bleeding, severe renal impairment, known hypersensitivity to indomethacin or other NSAIDs, previous aspirin-exacerbated respiratory disease, and late pregnancy should not take indomethacin without specialist assessment; dose adjustment and monitoring are required for older adults and those with cardiovascular risk.

Indomethacin is generally considered more potent on a milligram-per-milligram basis and has a different clinical profile and adverse effect spectrum than ibuprofen; choice between them depends on indication, patient tolerability, comorbidities, and physician judgment rather than a simple potency comparison.

Symptomatic relief for pain and inflammation often begins within one to two hours after oral dosing as plasma levels peak, with maximal clinical effects and full anti-inflammatory benefit developing over repeated dosing according to the treated condition and regimen.