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Since "Drug information request" is a placeholder, I have provided information for **Acetaminophen (Paracetamol)** as a standard clinical pharmaceutical reference. If you require information on a specific drug, please resubmit with the drug name.
# Acetaminophen (Paracetamol)
## Overview
Acetaminophen is a non-opioid analgesic and antipyretic. It acts primarily through central nervous system inhibition of prostaglandin synthesis. It lacks significant anti-inflammatory activity.
## Primary Indications
Mild to moderate pain, fever reduction.
## Adult Dosing
* **Oral/Rectal:** 325–650 mg every 4–6 hours or 1000 mg every 6–8 hours.
* **Maximum Daily Dose:** 3000 mg to 4000 mg per 24 hours (use caution; lower limits of 3000 mg are preferred in long-term therapy or elderly patients).
## Pediatric Dosing
* **Oral/Rectal:** 10–15 mg/kg per dose every 4–6 hours as needed.
* **Maximum:** 5 doses in 24 hours. Maximum 75 mg/kg/day or 4000 mg/day, whichever is lower.
## Dose Adjustments
* **Hepatic Impairment:** Use with caution. Consider lower doses or increased dosing intervals; avoid in severe hepatic impairment or active liver disease.
* **Renal Impairment:** Generally no adjustment required, but use with caution in chronic ESRD.
## Contraindications
Hypersensitivity to acetaminophen; severe active liver disease or severe hepatic impairment.
## Adverse Effects
Generally well-tolerated. Rare potential for serious skin reactions (e.g., SJS/TEN). Hepatotoxicity is the primary concern with overdose.
## Key Drug Interactions
* **Warfarin:** Chronic, high-dose use (>2g/day) may increase the INR.
* **Alcohol:** Increased risk of hepatotoxicity with chronic excessive alcohol consumption.
* **CYP2E1 Inducers:** (e.g., isoniazid, chronic alcohol) increase the production of the toxic metabolite NAPQI.
## Monitoring
* Monitor total daily intake (including combination products like hydrocodone/acetaminophen) to avoid accidental overdose.
* Liver function tests (LFTs) if long-term high-dose therapy is required.
## Clinical Pearls
Acetaminophen is a major cause of drug-induced liver injury worldwide. Always screen for "hidden" acetaminophen in combination prescription products (e.g., Percocet, Vicodin) to prevent exceeding the 4000 mg total daily ceiling.
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**Disclaimer:** This information is for educational purposes only. Clinical practice and local protocols vary. Always verify specific dosing, safety thresholds, and contraindications by consulting current FDA-approved prescribing information, the facility’s formulary, or clinical decision support software before prescribing or administering medication.
