Pain is the most common reason people visit a pharmacy. But picking up the first packet of tablets you see isn’t always the best approach. The right pain relief depends on understanding what type of pain you have — and which medicine is most appropriate for you specifically.

Types of Pain and Why the Distinction Matters

Nociceptive pain is caused by actual tissue damage — a cut, a broken bone, a burn. It’s the most common type and is well treated by standard OTC analgesics.

Inflammatory pain is a subset of nociceptive pain driven by inflammation — think arthritis, a sprained ankle or period pain. NSAIDs (ibuprofen, aspirin) are most effective because they target the inflammation causing the pain.

Neuropathic pain arises from nerve damage or dysfunction — burning, shooting or tingling pain. Standard OTC analgesics often work poorly for neuropathic pain; this is best assessed by a GP.

Acute pain comes on suddenly and typically resolves as the underlying cause heals. Chronic pain persists beyond the expected healing time (usually more than 3 months) and requires a different management approach.

The Main OTC Pain Relievers Explained

Paracetamol (500–1000mg) works centrally to raise the pain threshold and reduce fever. It has NO anti-inflammatory effect. It is among the safest analgesics available and is suitable for almost everyone — including pregnant women, the elderly, and people with stomach or kidney issues. Maximum 4g per day in adults. Overdose (even modest) causes serious liver damage.

Ibuprofen (200–400mg) is a non-steroidal anti-inflammatory drug (NSAID). It blocks COX-1 and COX-2 enzymes, reducing prostaglandins — the chemicals that drive both inflammation and pain signals. Better than paracetamol for inflammatory pain. Must be taken with food. Avoid if: history of stomach ulcers, kidney disease, heart failure, pregnancy (especially third trimester), asthma triggered by NSAIDs.

Aspirin (300–900mg) is also an NSAID. Not recommended for children under 16. Also acts as a blood thinner, which is why low-dose aspirin (75mg) is used for cardiovascular protection.

Codeine-containing preparations (e.g. co-codamol 8/500 — codeine 8mg + paracetamol 500mg) are available from pharmacy without prescription. Provide modestly stronger pain relief for short-term use. Risk of dependence and constipation. Limited to 3 days OTC use.

Topical Pain Relief

Topical treatments deliver the medicine directly to the site of pain, with far fewer systemic side effects:

  • Diclofenac gel (Voltarol) — well-evidenced for localised joint and muscle pain
  • Ibuprofen gel — effective for sprains, strains and arthritis
  • Lidocaine patches — useful for post-herpetic neuralgia
  • Capsaicin cream — for chronic osteoarthritis; works through depletion of substance P
  • Menthol gels (Deep Heat, Ralgex) — counter-irritant, creates sensation of warmth/cooling

Red Flags: When OTC Pain Relief Isn’t Enough

See a GP or call 111 if: pain is severe or sudden onset, pain persists beyond 3 days without improvement, pain is associated with fever, unexplained weight loss, or nocturnal waking, chest or jaw pain (possible cardiac), severe headache described as “thunderclap” (possible bleed), or back pain with bladder/bowel problems.

Pain Relief at Chemist 2 Customer

Shop our full Pain Relief range including ibuprofen, paracetamol and topical treatments. Related guides: Ibuprofen vs Paracetamol, Migraine Relief, Back Pain Management.