Can I Take Ibuprofen and Paracetamol Together?

✅ Reviewed by Ramon Wong, BPharm, Registered Pharmacist (New Zealand) | May 2026 — This information is for educational purposes only and is not a substitute for personalised advice from your doctor or pharmacist. Always seek professional guidance before making changes to your medications.

Yes — ibuprofen and paracetamol can be taken together safely for most adults. In fact, combining them is often more effective than using either medicine on its own, and is a strategy commonly recommended by pharmacists and doctors in New Zealand for managing moderate pain.

Is it safe to take ibuprofen and paracetamol together?

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Yes, for most healthy adults, taking ibuprofen and paracetamol together is safe. The two medicines work differently, act on different pathways, and are processed by the body differently — so they do not directly interact with each other in a dangerous way.

Research supports this approach: a 2020 Cochrane review and multiple clinical trials show that the combination of ibuprofen and paracetamol provides better pain relief than either alone at equivalent doses.

How to take ibuprofen and paracetamol together

There are two main approaches:

Option 1: Take them at the same time

Some people take both medicines at the same time (e.g., 500 mg paracetamol + 200–400 mg ibuprofen). This is safe and provides combined pain relief starting at the same time.

Option 2: Alternate them (staggered dosing)

Staggering doses throughout the day can help maintain more consistent pain relief. For example:

8:00 am — Paracetamol 1000 mg
10:00 am — Ibuprofen 400 mg
12:00 pm — Paracetamol 1000 mg
2:00 pm — Ibuprofen 400 mg
(and so on, following the maximum doses for each)

This “alternating” approach is particularly useful for dental pain, post-surgical pain, or other situations where continuous pain control is important.

What are the standard doses?

Paracetamol (adult doses):

Standard dose: 500 mg–1000 mg per dose
Maximum: 1000 mg per dose
Maximum daily dose: 4000 mg per day (4 g/day) — do not exceed this
Frequency: Every 4–6 hours as needed

Ibuprofen (adult doses):

Standard OTC dose: 200–400 mg per dose
Maximum OTC dose: 400 mg per dose
Maximum daily dose: 1200 mg per day for self-treatment (higher doses possible under medical supervision)
Frequency: Every 6–8 hours
Take with food or milk to reduce stomach irritation

How do ibuprofen and paracetamol work differently?

They work through completely different mechanisms, which is why they complement each other:

Paracetamol (acetaminophen) — works primarily in the brain and spinal cord to reduce pain signalling; also lowers fever. Does not reduce inflammation at standard doses.
Ibuprofen (an NSAID) — blocks prostaglandin production by inhibiting COX enzymes throughout the body; reduces pain, fever, AND inflammation at the site of injury or illness.

Because they target different pain pathways, combining them produces additive (or even synergistic) pain relief.

When is the combination particularly useful?

Dental pain and toothache — strong evidence supports ibuprofen + paracetamol as highly effective
Post-surgical or procedural pain (e.g., after wisdom tooth removal, minor surgery)
Back pain and musculoskeletal pain — especially where inflammation is contributing
Headaches and migraines — for severe headaches not responding to either alone
Period pain (dysmenorrhoea) — ibuprofen is particularly effective; adding paracetamol improves overall relief
Fever management — both reduce fever; alternating can help maintain normal temperature for longer

Who should NOT take ibuprofen with paracetamol?

While the combination is safe for most adults, ibuprofen should be avoided or used with caution in some people:

Kidney disease — ibuprofen can worsen kidney function; paracetamol is generally safer for people with kidney disease
Stomach ulcers or gastritis — ibuprofen increases risk of stomach bleeding; avoid or use with food and a stomach protectant (e.g., omeprazole)
Heart failure or cardiovascular disease — NSAIDs (including ibuprofen) may increase fluid retention and cardiovascular risk
Pregnancy — ibuprofen should be avoided, particularly after 28 weeks of pregnancy; paracetamol is the preferred pain reliever in pregnancy
Children under 12 — check with a pharmacist for appropriate doses; do not give ibuprofen to infants under 3 months
Asthma — some people with asthma are sensitive to NSAIDs including ibuprofen; check with your doctor or pharmacist
Liver disease — paracetamol should be used cautiously; ibuprofen is generally the safer option in liver disease but still needs care