Hygigal (Paracetamol)

Paracetamol acts centrally to relieve pain and reduce fever, making it useful in several clinical situations.

• Pain: provides relief of mild to moderate acute pain, such as headache or musculoskeletal discomfort.
• Fever: lowers elevated body temperature associated with infectious or inflammatory conditions.
• Postoperative pain: helps control pain following surgical procedures when rapid onset is desired.

• Paracetamol exerts its effect by inhibiting cyclooxygenase (COX) enzymes, primarily COX‑2, within the central nervous system. This reduces the synthesis of prostaglandins that sensitize nociceptors and mediate the hypothalamic set‑point for temperature, thereby producing analgesic and antipyretic actions without significant peripheral anti‑inflammatory activity. The inhibition is modest and reversible, allowing normal prostaglandin production to resume after the drug is cleared.

Paracetamol administered intravenously may be associated with several adverse reactions, ranging from mild to serious.

Common Side Effects

• Nausea: mild queasiness that may resolve without treatment.
• Headache: transient headache during or after infusion.
• Injection site reaction: redness or mild discomfort at the infusion site.

Serious or Rare Side Effects

• Anaphylaxis: severe allergic reaction requiring immediate intervention.
• Hepatotoxicity: potential liver injury, especially with overdose.
• Renal impairment: acute kidney injury in vulnerable patients.

When using intravenous paracetamol, several precautions should be observed to ensure patient safety.

• Assess liver function: avoid or adjust use in patients with severe hepatic impairment.
• Monitor renal function: use cautiously in renal failure and adjust dosing if needed.
• Avoid concurrent hepatotoxic drugs: limit use with other agents that may damage the liver.
• Use with caution in alcohol‑dependent patients: increased risk of liver toxicity.
• Pregnancy and breastfeeding: consult the prescriber as safety data are limited.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Paracetamol can interact with other medicines, influencing its efficacy or safety.

Major Interactions (Avoid)

• Concomitant use with other hepatotoxic agents (e.g., high‑dose ibuprofen, certain antitubercular drugs): may cause liver injury.
• Combination with warfarin: can enhance anticoagulant effect and increase bleeding risk.
• Co‑administration with enzyme‑inducing anticonvulsants (e.g., carbamazepine): may reduce paracetamol plasma levels.

Moderate Interactions (Monitor Closely)

• Alcohol consumption: may potentiate hepatotoxicity.
• CYP450 inhibitors (e.g., fluconazole): can increase paracetamol concentrations.
• Use with other antipyretics/analgesics: additive effect may raise risk of toxicity.