Paracetamol vs Ibuprofen: Which Painkiller Should You Choose?

Paracetamol and ibuprofen are the two most commonly used over-the-counter painkillers in Australia. You will find at least one of them in almost every household medicine cabinet. Yet many Australians are unsure which to reach for — and whether it matters. The short answer: it does matter. They work through entirely different mechanisms, they suit different types of pain, and they carry different risks.

How They Work: The Core Difference

Paracetamol (brand names: Panadol, Panamax, Herron, Chemist Own) is an analgesic and antipyretic. It reduces pain signals in the brain and lowers fever. Crucially, it has no anti-inflammatory effect.

Ibuprofen (brand names: Nurofen, Advil, Herron Blue, Chemist Own Ibuprofen) is a non-steroidal anti-inflammatory drug (NSAID). It works by blocking COX enzymes that produce prostaglandins — chemicals that cause pain, inflammation, and fever. Because it targets inflammation directly, ibuprofen is more effective for pain involving swelling or tissue injury.

Head-to-Head Comparison

When to Choose Paracetamol

• •Tension headaches — first-line treatment
• •Fever reduction — equally effective as ibuprofen
• •Stomach-sensitive patients — does not irritate the stomach lining
• •Pregnancy — safest OTC pain reliever in pregnancy
• •People on blood thinners (warfarin) — does not affect platelets
• •Asthma — safer than NSAIDs for sensitive asthmatics
• •Elderly — lower gastrointestinal bleeding risk

Recommended Product

Panadol Rapid (Paracetamol 500mg)

Fast-acting pain relief. Gentle on the stomach. Suitable for headaches, fever, and general aches.

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When to Choose Ibuprofen

• •Period pain — prostaglandins drive cramps, ibuprofen blocks them directly
• •Sprains, strains, sports injuries — reduces pain and swelling
• •Dental pain and toothache — inflammation responds well
• •Back pain — particularly when muscular inflammation is involved
• •Arthritis flare-ups — targets the inflammatory component
• •Migraine — some evidence suggests slightly more effective than paracetamol

Recommended Product

Nurofen (Ibuprofen 200mg)

Fast, effective pain relief with anti-inflammatory action. Ideal for period pain, back pain, and inflammation.

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Can You Take Both Together?

Yes. Because they work through completely different mechanisms, it is generally safe for adults to take both. Many Australian GPs and pharmacists recommend this for moderate to severe pain.

Option 1: Take Both at the Same Time

Take a dose of paracetamol and a dose of ibuprofen together, following the recommended dose for each. Keep track of when you took each and never exceed the daily maximum of either.

Option 2: Alternate Between Them

Take paracetamol, then ibuprofen 2-3 hours later, then paracetamol again. This provides more consistent relief because you are taking something every 2-3 hours rather than waiting 4-6 hours.

Safety: Paracetamol

• •Overdose is the leading cause of acute liver failure in Australia. Never exceed 4g in 24 hours from ALL sources.
• •Hidden paracetamol in combination products (Codral, Lemsip, Demazin, Panadeine). Always check labels.
• •Regular heavy drinking increases liver damage risk. Talk to your pharmacist if you drink >2 standard drinks daily.
• •Overdose action: Call Poisons Information Centre 13 11 26 or go to ED immediately — even if you feel fine.

Safety: Ibuprofen

• •Can irritate the stomach lining; prolonged use may cause ulcers or GI bleeding. Always take with food.
• •Can reduce kidney blood flow. Avoid with kidney disease or dehydration.
• •Long-term high-dose use linked to slightly increased heart attack/stroke risk.
• •~10-20% of adult asthmatics are NSAID-sensitive. Check with your pharmacist.
• •Avoid in pregnancy, especially third trimester (TGA Category C/D).

Special Populations

Pregnancy

Paracetamol is the safest OTC pain reliever during pregnancy at the lowest effective dose. Ibuprofen is contraindicated in the third trimester and used with caution earlier only under medical advice.

Children

Both are available in child-specific liquid formulations. Dose by weight, not age. Ibuprofen should not be given to babies under 3 months or under 5kg. Always use a dedicated children's product.

Elderly (Over 65)

Paracetamol is preferred first-line for older adults. Ibuprofen carries higher risks of GI bleeding, kidney problems, and cardiovascular events in this age group.

Australian Brands and Pricing

Frequently Asked Questions

Is paracetamol or ibuprofen better for headaches?

For most tension headaches, both are effective. Paracetamol is often preferred for fewer side effects. For migraines, some evidence suggests ibuprofen may be slightly more effective due to the inflammatory component.

Can I take paracetamol and ibuprofen at the same time?

Yes. They work through different mechanisms, so taking both is safe for adults. You can take them simultaneously or alternate every 2-3 hours. Always follow recommended doses.

Which is better for period pain?

Ibuprofen is generally more effective for period pain. Period cramps are driven by prostaglandins, and ibuprofen blocks their production directly. Start at the first sign of cramps for best results.

Is ibuprofen safe to take every day?

Ibuprofen is intended for short-term use only. Regular daily use increases the risk of stomach ulcers, GI bleeding, kidney damage, and cardiovascular problems. See your GP for long-term pain management.

Is Nurofen really better than generic ibuprofen?

Standard Nurofen contains the same 200mg ibuprofen as generics and must meet identical TGA standards. No clinical difference. Nurofen Zavance may absorb slightly faster but overall relief is equivalent. Generics offer the same result at a fraction of the cost.

Which is safer for older adults?

Paracetamol is considered safer for people over 65. Australian guidelines recommend it as first-line. If an NSAID is needed, use the lowest dose for the shortest time with stomach protection.