Paracetamol Arena (Paracetamol)

Paracetamol acts as a central analgesic and antipyretic, addressing a range of mild to moderate pain and fever conditions.

• Mild to moderate pain: alleviates discomfort from injuries, surgery, or musculoskeletal sources.
• Fever: lowers elevated body temperature associated with infection or inflammation.
• Headache: reduces the intensity of tension‑type or migraine‑related headaches.
• Toothache: eases dental pain during or after procedures.
• Menstrual cramps: diminishes uterine cramp discomfort.
• Cold and flu symptoms: helps control fever and body aches accompanying viral illnesses.

• Paracetamol exerts its effect by inhibiting cyclooxygenase enzymes, primarily COX‑2, within the central nervous system. This inhibition reduces the synthesis of prostaglandins that mediate pain and thermoregulation, leading to analgesic and antipyretic outcomes without significant peripheral anti‑inflammatory activity.

Paracetamol is generally well tolerated, but adverse reactions can occur.

Common Side Effects

• Nausea: mild stomach upset after ingestion.
• Abdominal discomfort: transient pain or fullness.
• Rash: skin redness or mild itching.
• Headache: occasional worsening of head pain.

Serious or Rare Side Effects

• Stevens‑Johnson syndrome: severe skin reaction requiring immediate medical attention.
• Liver toxicity: elevated liver enzymes or hepatic failure, especially with overdose.
• Blood disorders: thrombocytopenia or neutropenia.
• Anaphylaxis: rare allergic reaction with breathing difficulty or swelling.

Paracetamol should be used with awareness of specific safety considerations.

• Assess liver function: avoid use in patients with severe hepatic impairment.
• Avoid alcohol: concurrent intake increases risk of liver injury.
• Use lowest effective dose: limit duration to the shortest period needed for symptom control.
• Monitor in children: dose according to weight and age, and avoid accidental overdose.
• Store at ambient temperature: keep in the original pack, protect from moisture and direct sunlight.

Paracetamol may interact with several medicines, requiring attention to dosage and monitoring.

Major Interactions (Avoid)

• Warfarin: increased anticoagulant effect may raise bleeding risk.
• Alcohol: combined use heightens potential for liver damage.
• Isoniazid: concurrent therapy can exacerbate hepatotoxicity.

Moderate Interactions (Monitor Closely)

• Rifampicin: may reduce paracetamol plasma levels, diminishing efficacy.
• Phenytoin: can increase metabolism, potentially lowering therapeutic effect.
• Oral contraceptives: may slightly increase hepatic enzyme activity, requiring observation.