Drug%25252525252525252525252525252525252525252525252525252525252520information%25252525252525252525252525252525252525252525252525252525252520request

Please specify the drug name for a clinical review. As the request provided was for "Drug information request," I have provided a template below using **Acetaminophen** as an example. **Please reply with the specific drug you would like reviewed.** *** # Acetaminophen (Paracetamol) ## Overview Acetaminophen is a nonsalicylate analgesic and antipyretic. Unlike NSAIDs, it lacks peripheral anti-inflammatory activity. It is processed primarily via glucuronidation and sulfation in the liver, with a small portion metabolized by CYP2E1 into the toxic metabolite NAPQI. ## Primary Indications Mild to moderate pain; fever reduction. ## Adult Dosing * **Oral/Rectal:** 650 mg to 1000 mg every 4–6 hours as needed. * **Maximum Dose:** 4000 mg per 24 hours. (Note: Many clinicians advocate for a limit of 3000 mg/day for chronic use or in patients with liver risk). ## Pediatric Dosing * **Oral/Rectal:** 10–15 mg/kg per dose every 4–6 hours. * **Maximum Dose:** 75 mg/kg/day, not to exceed 5 doses in 24 hours. ## Dose Adjustments * **Hepatic Impairment:** Reduce total daily dose or extend dosing intervals in patients with active liver disease or chronic alcohol use. * **Renal Impairment:** Generally no adjustment required; however, use caution in end-stage renal disease. ## Contraindications Hypersensitivity to acetaminophen; severe active hepatic impairment or severe hepatic failure. ## Adverse Effects Generally well-tolerated. Rare but serious: Hepatotoxicity (dose-dependent), skin reactions (SJS/TEN/AGEP). ## Key Drug Interactions * **Warfarin:** Chronic, high-dose use (>2g/day) may increase the INR. * **CYP2E1 Inducers (e.g., Isoniazid):** May increase production of toxic metabolite NAPQI, increasing hepatotoxicity risk. * **Alcohol:** Chronic intake increases hepatotoxicity risk due to glutathione depletion and CYP2E1 induction. ## Monitoring * Monitor liver function tests (LFTs) if used long-term at high doses. * Monitor for signs of accidental overdose (e.g., abdominal pain, nausea/vomiting, diaphoresis). ## Clinical Pearls * **Hidden Sources:** Acetaminophen is present in hundreds of combination products (e.g., opioids like Percocet/Lorcet, OTC cold/flu meds). Always perform a comprehensive medication reconciliation to prevent total daily dose exceeding 4g. * **Antidote:** N-acetylcysteine (NAC) is the standard of care for toxic ingestions. * **Dosing Accuracy:** Always verify pediatric weight-based dosing; concentrated infant drops (160 mg/5 mL) and children's liquid formulations are identical, but parents must use the supplied instrument to prevent dosing errors. *** *Disclaimer: This information is for educational purposes and does not account for specific patient clinical status or local institutional protocols. Always verify current prescribing information, package inserts, and clinical guidelines before prescribing or administering medication.*