Paracetamol Us Pharmacia (Paracetamol)

Paracetamol acts as an analgesic and antipyretic across several common conditions.

• Fever: reduces elevated body temperature.
• Headache: alleviates mild to moderate headache pain.
• Musculoskeletal pain: provides relief from minor muscle aches and back pain.
• Toothache: eases dental pain associated with mild inflammation.

• Paracetamol exerts its effect primarily by inhibiting cyclooxygenase enzymes (COX‑1 and COX‑2) in the central nervous system, which reduces the synthesis of prostaglandins involved in pain signalling and thermoregulation. The exact peripheral mechanism remains less defined, but central inhibition leads to analgesic and antipyretic outcomes without significant anti‑inflammatory activity.

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

Common Side Effects

• Nausea: mild stomach upset experienced by some users.
• Abdominal discomfort: occasional stomach pain or indigestion.
• Headache: paradoxical headache in rare cases.
• Dizziness: transient light‑headedness.
• Skin rash: mild itching or erythema.

Serious or Rare Side Effects

• Severe skin reactions: Stevens‑Johnson syndrome or toxic epidermal necrolysis.
• Hepatotoxicity: liver injury, especially with overdose or chronic high‑dose use.
• Blood disorders: agranulocytosis or thrombocytopenia.
• Anaphylaxis: rare severe allergic response.
• Renal impairment: acute kidney injury in susceptible individuals.

Paracetamol should be used with awareness of specific safety considerations.

• Liver function: avoid use in patients with severe hepatic impairment.
• Alcohol consumption: limit intake as combined use increases hepatotoxic risk.
• Maximum daily dose: do not exceed the recommended total daily amount.
• Pregnancy and breastfeeding: use only if clearly needed after professional assessment.
• Pediatric use: ensure appropriate formulation and dosing for children.
• Drug interactions: review all concurrent medications for potential interactions.
• Store at ambient temperature: keep in the original pack, protect from moisture and direct sunlight.

Paracetamol can interact with several medicines, requiring attention to avoid adverse outcomes.

Major Interactions (Avoid)

• Other paracetamol‑containing products: risk of cumulative overdose.
• Warfarin: may enhance anticoagulant effect and increase bleeding risk.
• Strong CYP450 inducers (e.g., rifampicin): may reduce paracetamol efficacy.

Moderate Interactions (Monitor Closely)

• Alcohol: additive hepatotoxic potential.
• Isoniazid: increased risk of liver injury.
• Carbamazepine: may increase paracetamol metabolism, lowering plasma levels.
• Antiepileptics (e.g., phenytoin): may alter hepatic enzyme activity.
• Certain antivirals: potential for altered clearance.