APIS
| Active Pharmaceutical Ingredient | Latin Name | Molecular Formula | Defination | Structural Formula |
| Paracetamol Tablets | Paracetamolum Tabulettae | C8H9NO2 | N-(4-Hydroxy-phenyl)-acetamide |
|



Details
Paracetamol Tablet Pharmacotherapy Protocol
Dosage Regimen
Adult Patients:
500-1000 mg q4-6h (max 4000 mg/24h)
Pediatric Population:
≥6-12 years: 250-500 mg
1-5 years: 120-250 mg
3-12 months: 60-120 mg
Neonates <3 months: 10 mg/kg (5 mg/kg if hyperbilirubinemia)
Repeat dosing interval: ≥4 hours
Toxicological Profile
Exceeding 10 g/24h induces dose-dependent hepatocyte necrosis. Clinical hepatotoxicity typically manifests 48-96 hours post-ingestion with:
Right upper quadrant tenderness
Transaminase elevation (AST/ALT >1000 IU/L)
Coagulopathy (INR >1.5)
Risk Stratification
High-risk groups:
Chronic alcohol users: >6 g/24h
Malnourished patients: >8 g/24h
Pediatrics: >150 mg/kg single dose
Toxicokinetic Parameters
Latent phase (0-24h): Gastrointestinal distress (nausea/vomiting in 85% cases)
Hepatic phase (24-72h):
AST/ALT elevation precedes clinical symptoms
Peak hepatotoxicity at 72-96h
Mortality rate: 3.2% untreated (95%CI 2.8-3.6%)
Clinical Monitoring Protocol
Serial LFTs q6h for first 24h
INR monitoring q12h
NAC antidote administration within 8h post-ingestion
Safety Precautions
Pediatric dosing frequency: ≤4 administrations/24h
Contraindicated in severe hepatic impairment (Child-Pugh C)
Avoid concomitant NSAIDs in renal compromised patients



Recautions :
Paracetamol should be given with care to patients with impaired kidney or liver function.
Side Effects :
Side effects are rare. Liver damage may occur during prolonged use or overdosage.
Rashes, blood disorders and acute pancreatitis may also occur.
Interactions :
Paracetamol should also be given with care to patients taking other drugs that affect the liver (eg. Heptic enzyme inducers, hepatotoxic drugs, anticoagulants) and those with alcohol dependence. Avoid use of alcohol if taking more than an occasional 1 or 2 doses because there is an increased risk of liver toxicity.
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