Paracetamol (pcm) Drop Information

# Paracetamol (pcm) Drop Information ## Overview Paracetamol (acetaminophen) is a central-acting analgesic and antipyretic. It lacks significant anti-inflammatory properties. Oral drops (typically 100 mg/mL) are highly concentrated and intended for precision dosing in infants. ## Primary Indications * Mild to moderate pain (analgesia). * Fever reduction (antipyresis). ## Adult Dosing * **Standard dose:** 500 mg to 1,000 mg every 4–6 hours. * **Maximum daily dose:** 4,000 mg (4 g) per 24 hours. * *Note:* Drops are generally not the preferred dosage form for adults due to volume. ## Pediatric Dosing * **Dose:** 10–15 mg/kg per dose every 4–6 hours. * **Frequency:** Maximum 4 doses in 24 hours. * **Administration:** Must use the calibrated dropper provided with the specific product. * *Note:* Always verify the concentration (e.g., 100 mg/mL vs. 120 mg/5 mL) to avoid 10-fold dosing errors. ## Dose Adjustments * **Hepatic Impairment:** Reduce total daily dose or extend dosing interval. Avoid in severe liver failure. * **Renal Impairment:** Generally no adjustment required, but use with caution in severe impairment (CrCl < 10 mL/min). * **Malnutrition/Chronic Alcoholism:** Reduce maximum daily dose to 2,000–3,000 mg to mitigate hepatotoxicity risk. ## Contraindications * Known hypersensitivity to paracetamol. * Severe active hepatic disease or hepatic failure. ## Adverse Effects * Rare at therapeutic doses. * **Severe:** Hepatotoxicity (acute liver failure) following overdose; rare skin reactions (Stevens-Johnson syndrome, TEN). ## Key Drug Interactions * **Warfarin:** Chronic, high-dose use may increase the International Normalized Ratio (INR). * **CYP450 Inducers (e.g., Carbamazepine, Phenytoin, Rifampin):** May increase the production of the toxic metabolite NAPQI, increasing hepatotoxicity risk. * **Alcohol:** Increases risk of hepatotoxicity through enzyme induction and glutathione depletion. ## Monitoring * **Efficacy:** Pain intensity and temperature. * **Safety:** Signs of jaundice, abdominal pain (RUQ), or dark urine if exceeding recommended doses or in susceptible patients. ## Clinical Pearls * **Concentration Alert:** Paracetamol drops are significantly more concentrated than oral suspensions. Ensure caregivers do not confuse mL volumes between different product formulations. * **Hidden Sources:** Screen for concurrent use of combination products (e.g., cold/flu preparations or opioid-paracetamol combinations) to prevent accidental overdose. * **Dosing Calculation:** Always calculate pediatric doses based on the patient's actual weight, not age, to prevent toxicity. * **Local Protocol:** Always refer to institutional or national pediatric formularies (e.g., BNF for Children) for specific weight-based titration protocols. *** *Disclaimer: This information is for educational purposes and does not replace professional medical judgment. Always verify dosages, contraindications, and drug interactions against current local prescribing guidelines and official product monographs before administration.*