Indomethacin: Nursing Drug Guide, GI Bleeding & Renal Injury & NCLEX Review

Indomethacin is available generically and was marketed as Indocin (capsules 25 mg and 50 mg; suppositories; extended-release Indocin SR). Verify the MAR and home list—patients may say “Indocin” while orders list generic indomethacin.

Do not confuse indomethacin with other NSAIDs (ibuprofen, naproxen, meloxicam, or diclofenac) when reconciling therapy. Duplicate NSAID exposure dramatically increases GI bleeding and renal risk per NSAID class labeling.

Indomethacin is a nonsteroidal anti-inflammatory drug (NSAID) with anti-inflammatory, analgesic, and antipyretic activity. Per prescribing information, it inhibits cyclooxygenase (COX-1 and COX-2) and prostaglandin synthesis. It is used for inflammatory arthritis and selected acute musculoskeletal conditions when NSAID benefits outweigh cardiovascular, GI, renal, and CNS risks.

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Indomethacin has analgesic, anti-inflammatory, and antipyretic properties through inhibition of cyclooxygenase and prostaglandin synthesis. It is a potent NSAID; adverse reactions generally correlate with dose per labeling. It carries a boxed warning for serious cardiovascular thrombotic events and serious GI bleeding. Indomethacin is eliminated primarily via renal excretion, metabolism, and biliary excretion—use caution in elderly patients and those with impaired renal function, and monitor renal function when therapy continues.

Use the lowest effective dose for the shortest duration consistent with treatment goals. Verify indication, renal and hepatic function, and concurrent anticoagulant, ACE inhibitor, ARB, diuretic, lithium, or methotrexate therapy before administration. If minor adverse effects develop as dosage increases, reduce rapidly to a tolerated dose; if severe adverse reactions occur, stop the drug per labeling.

Pediatrics: Safety and effectiveness in patients 14 years of age and younger have not been established; indomethacin should not be prescribed for pediatric patients 14 years of age and younger unless toxicity or lack of efficacy with other drugs warrants the risk. If used in patients two years of age or older, suggested starting dose is 1 to 2 mg/kg/day in divided doses (maximum 3 mg/kg/day or 150–200 mg/day, whichever is less) per labeling.

Missed dose: Not specified in the reviewed prescribing information. If a scheduled dose is missed, give when remembered unless the next dose is due soon—do not double doses. Follow prescriber orders and institutional protocol.

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Pretreatment checks

• Perform medication reconciliation—screen for duplicate NSAIDs, aspirin, anticoagulants, ACE inhibitors, ARBs, and diuretics
• Review allergy history: indomethacin, aspirin/NSAID reactions, aspirin-sensitive asthma, prior serious NSAID skin reactions
• Assess cardiovascular history, blood pressure, edema, renal function (BUN/creatinine), and prior GI bleeding or peptic ulcer disease
• Confirm surgical plan—hold per protocol before CABG; NSAIDs are contraindicated for CABG pain

Contraindications

• Known hypersensitivity to indomethacin; previous serious skin reactions to NSAIDs (e.g., Stevens-Johnson syndrome, toxic epidermal necrolysis) per labeling
• History of asthma, urticaria, or allergic-type reactions after aspirin or other NSAIDs (including aspirin-sensitive asthma / aspirin triad)
• Use in the setting of coronary artery bypass graft (CABG) surgery

Important interactions

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Oral capsules: Give with a full glass of water. Swallow capsules whole. Indomethacin may be taken with food or milk if GI upset occurs.

• Confirm home Indocin, OTC NSAIDs, and herbal antiplatelet supplements are documented after medication reconciliation
• Document indication, dose, route, time, and pain score before and after PRN or gout doses
• Ensure fall-risk precautions in older adults with dizziness, somnolence, or orthostatic symptoms
• Counsel that indomethacin may cause drowsiness—avoid driving until response is known

• Improved pain score or joint mobility in arthritis or acute gout (gout pain relief may begin within 2 to 4 hours per labeling)
• Reduced swelling, tenderness, and heat in acute gout within 24 to 36 hours when therapy is effective
• No new GI bleeding, blood pressure elevation, edema, CNS toxicity, or renal function decline while therapy continues

Hold indomethacin and escalate immediately when serious NSAID complications are suspected.

• Black stool, hematemesis, coffee-ground emesis, or severe abdominal pain suggesting GI bleeding
• Chest pain, sudden weakness, facial droop, slurred speech, or other stroke or MI symptoms
• New or worsening dyspnea, rapid weight gain, or peripheral edema in patients with heart failure
• Decreased urine output, rising creatinine, or hyperkalemia suggesting acute kidney injury
• Severe headache persisting despite dose reduction, new confusion, psychosis, or somnolence impairing safety
• Urticaria, facial swelling, wheezing, or anaphylaxis after a dose
• Jaundice, dark urine, or persistent nausea with rising AST/ALT on liver function tests

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Symptoms following acute NSAID overdosage are typically limited to lethargy, drowsiness, nausea, vomiting, and epigastric pain, which are generally reversible with supportive care. Gastrointestinal bleeding has occurred. Hypertension, acute renal failure, respiratory depression, and coma have occurred but were rare per indomethacin capsule labeling.

Management

• No specific antidote—provide symptomatic and supportive care
• Consider emesis and/or activated charcoal (60–100 g in adults, 1–2 g/kg in children) and/or osmotic cathartic for patients seen within 4 hours with symptoms or after a large overdose (5–10 times the usual dose) per labeling
• Forced diuresis, alkalinization of urine, hemodialysis, or hemoperfusion may not be useful due to high protein binding

• Indomethacin vs indapamide—similar “indo-” prefix in verbal orders; read back generic name and strength
• Indocin vs indomethacin—brand/generic mismatch on MAR; verify both appear on reconciliation
• Indomethacin vs ibuprofen/naproxen—duplicate NSAID therapy is a common inpatient error during gout or arthritis flares
• Strength errors—confirm 25 mg versus 50 mg capsules; acute gout orders often use higher doses than maintenance arthritis regimens
• Route mix-ups—oral capsules versus rectal suppositories require separate verification
• Duration errors—acute gout and shoulder courses are short; do not continue high-dose indomethacin after pain resolves without prescriber review

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Monitor

• Pain and function using structured pain assessment and mobility goals
• GI status—stool color, hemoglobin trend, and symptoms of bleeding or ulcer
• Blood pressure, weight, edema, and heart failure symptoms
• Renal function and electrolytes on BMP when diuretics, ACE inhibitors, or ARBs are co-administered
• INR and bleeding signs when anticoagulants are used
• Mental status, headache, dizziness, and fall incidents—especially in older adults
• LFTs and CBC when long-term NSAID therapy continues or hepatic risk factors are present per labeling

Document

• Dose, route, time, indication, and pain score response for acute gout or PRN doses
• Allergy verification (NSAID, aspirin-sensitive asthma, prior serious skin reaction)
• Patient education on bleeding, cardiovascular symptoms, CNS effects, and when to seek urgent care
• Hold parameters communicated to patient and on the MAR per institutional policy

• Take exactly as prescribed—do not combine with other ibuprofen, naproxen, or aspirin products unless your prescriber directs you to
• Report black or bloody stools, vomiting blood, severe stomach pain, chest pain, shortness of breath, sudden weakness, severe headache, confusion, facial swelling, or rash immediately
• Indomethacin may cause drowsiness or dizziness—avoid driving or hazardous activities until you know how it affects you
• NSAIDs can raise blood pressure and cause swelling—report rapid weight gain or ankle swelling
• Tell all clinicians you take indomethacin before surgery, dental procedures, or new prescriptions
• Pregnancy planning: avoid NSAIDs after about 30 weeks gestation; discuss risks with your prescriber if treatment is needed earlier in pregnancy
• Breastfeeding: tell your clinician you take indomethacin—an alternate pain medicine may be preferred while nursing a newborn

Do not give and contact the prescriber/pharmacist when:

Hold parameters may vary by institutional protocol. Follow prescriber orders, pharmacy guidance, and facility policy.

Practice NCLEX-style clinical judgment practice for indomethacin using a tabbed inpatient case (MAR, labs, vitals, nursing notes), then priority action, cue recognition, trend interpretation, ordered escalation steps, documentation cloze, and matrix urgency sorting—recognise cues → analyse → prioritise → act → evaluate outcomes.

This medication guide is written and reviewed using NurseOnShift editorial and clinical review standards.

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Educational use only. This content does not replace clinical judgment, prescriber orders, pharmacist guidance, product labeling, or institutional protocols.