Ibuprofen (Nurofen® and other brands) — Patient Information (Australia)

Ibuprofen is a widely used non-steroidal anti-inflammatory drug (NSAID) for the relief of pain, inflammation, and fever. In Australia, it’s available over the counter in a range of strengths and forms, including tablets, capsules, oral liquids and chewable products (brand and availability vary by retailer).

This page provides easy-to-understand information about how ibuprofen works, when to take it, common interactions and safety considerations, plus practical tips for safe use.

Quick product overview

What is ibuprofen?

Ibuprofen is an NSAID medicine used to relieve symptoms caused by inflammation and pain. It’s effective for many common problems such as headache, dental pain, muscle aches, sprains, back pain, period pain, and fever associated with colds and other minor illnesses.

Different brands may contain different forms and strengths. Always check the label for your exact product and follow the instructions on the pack or from a pharmacist.

How ibuprofen works (mechanism of action)

Ibuprofen works by decreasing the production of prostaglandins, chemical messengers involved in pain, fever, and inflammation. It does this by blocking enzymes called COX-1 and COX-2.

• Pain relief: Less prostaglandin activity reduces pain sensitivity.
• Anti-inflammatory action: Helps reduce swelling and inflammation.
• Fever reduction: Lowers fever by influencing the body’s temperature control mechanisms.

Compared with some other NSAIDs, ibuprofen is commonly chosen for its balanced effectiveness for mild to moderate pain and fever, and its availability in multiple formats.

Pharmacokinetics (how your body handles it)

Pharmacokinetics describes what happens after you take a dose—how ibuprofen is absorbed, distributed, metabolised, and removed from the body.

Absorption

After oral dosing, ibuprofen is absorbed from the gastrointestinal tract. Taking it with food may slow absorption slightly but can improve stomach tolerability.

Distribution

Ibuprofen is widely distributed in the body. It binds to plasma proteins, which can influence how it interacts with other medicines.

Metabolism

Ibuprofen is mainly metabolised in the liver. People with severe liver impairment should seek medical advice before use.

Excretion

Metabolites are eliminated mainly through the kidneys. Adequate hydration is important, especially when using NSAIDs.

Duration: The effects typically last about 4–6 hours, which is why repeat dosing is often spaced within this range. Individual response varies.

What ibuprofen is typically used for (indications)

Depending on the product strength and formulation, ibuprofen may be used for:

• Pain relief: headache, migraine-associated pain (as part of symptom management), toothache, muscle pain, back pain
• Inflammation-related pain: sprains, strains, sports injuries
• Period (menstrual) pain
• Fever (e.g., fever associated with colds and flu-like illnesses)
• Symptom relief for minor aches and pains where an NSAID is suitable

If symptoms are severe, persistent, or worsening, it’s important to seek professional advice rather than relying on ibuprofen alone.

Typical dosing and timing

Always follow the dosing instructions on your specific product packaging. Below is general guidance commonly used in Australia, but your pack instructions may differ—especially by strength and age.

Adults (general guidance)

• Often taken as 200 mg to 400 mg per dose, as needed.
• Doses are commonly spaced every 4 to 6 hours if required.
• Do not exceed the maximum daily amount stated on the product label.

Children

Children’s ibuprofen products are usually dosed by weight. Use only products designed for children and follow the child’s dosing instructions on the pack or as advised by a pharmacist.

• Use an oral syringe or appropriate measuring device for liquids.
• Check the strength (mg per mL or per tablet) before measuring or giving a dose.

Timing tips

• For pain or fever: take when symptoms begin.
• For best stomach comfort: consider taking with food or milk.
• Plan spacing: avoid taking doses too close together.
• If symptoms settle: use the lowest effective dose for the shortest necessary time.

When to stop and get advice: if pain or fever lasts more than a few days (or returns quickly after stopping), or if you experience concerning symptoms (such as severe abdominal pain, vomiting blood, black/tarry stools, chest pain, or breathing problems), seek urgent medical advice.

Should you take ibuprofen with food?

Food can influence tolerability. Ibuprofen can irritate the stomach lining in some people. Taking it with food may reduce the likelihood of stomach upset, nausea, or indigestion.

• With meals: often preferred if you’re prone to heartburn or stomach discomfort.
• Empty stomach: may increase gastrointestinal side effects for some people.
• Hydration: drink water—especially if you are active, unwell, or outside in hot weather.

Alcohol and ibuprofen interactions

Alcohol can increase the risk of stomach irritation and bleeding when combined with NSAIDs. It may also worsen dizziness or make side effects harder to tolerate.

• Best practice: avoid alcohol while taking ibuprofen unless your pharmacist has advised it’s safe for you.
• Higher risk groups: people with a history of ulcers, gastrointestinal bleeding, or heavy alcohol use should be extra cautious.

If you have questions about combining alcohol with your medicines, consider speaking with a pharmacist.

Medicine interactions (important)

Ibuprofen can interact with other medicines. Some combinations increase the risk of bleeding, kidney problems, or stomach complications. Always check the ingredients on any other pain relievers you’re taking to avoid accidental duplication of NSAIDs.

Common interaction categories

• Other NSAIDs (e.g., naproxen, aspirin for pain, diclofenac): avoid taking together unless specifically advised.
• Blood thinners (e.g., warfarin): NSAIDs can increase bleeding risk.
• Antiplatelet medicines (e.g., clopidogrel): may increase bleeding risk.
• Corticosteroids (e.g., prednisone): can increase gastrointestinal side effects.
• Selective serotonin reuptake inhibitors (SSRIs) (e.g., sertraline, fluoxetine): may increase bleeding risk when combined with NSAIDs.
• Diuretics (e.g., frusemide) and ACE inhibitors/ARBs (e.g., enalapril, lisinopril, losartan): together may increase kidney risk in some people.
• Lithium: NSAIDs can raise lithium levels.
• Methotrexate: NSAIDs can affect methotrexate clearance (risk depends on dose and regimen).
• Some diabetes and blood pressure medicines: NSAIDs can affect kidney function and may influence overall effect.

What to avoid

• Avoid taking multiple NSAIDs at the same time.
• Check cough, cold and flu products: some may already contain pain relief ingredients.
• If you’re unsure whether a product contains NSAIDs, ask a pharmacist.

Safety profile and who should be cautious

Ibuprofen is generally well tolerated when used as directed. However, like all medicines, it has potential side effects and risks. Your risk can be higher if you have certain medical conditions or take interacting medicines.

Common side effects

• Stomach discomfort, heartburn, nausea
• Abdominal pain
• Mild dizziness
• Headache (occasionally)

Serious side effects (seek urgent help)

• Signs of stomach or intestinal bleeding: vomiting blood, black/tarry stools, blood in stool
• Severe allergic reactions: swelling of face/lips, hives, wheezing, difficulty breathing
• Kidney problems: reduced urination, swelling of feet/ankles
• Severe skin reactions: blistering, peeling skin, sores in mouth
• Chest pain or shortness of breath that is sudden or severe

Who should avoid or get advice before using ibuprofen

Talk to a pharmacist or doctor before taking ibuprofen if you:

• Have a history of stomach ulcers or gastrointestinal bleeding
• Have kidney disease or are dehydrated (e.g., vomiting/diarrhoea)
• Have heart failure or significant cardiovascular disease
• Have had an allergic reaction to ibuprofen or other NSAIDs
• Have asthma that worsens with NSAIDs
• Are pregnant (especially later pregnancy) — seek professional advice for safest options
• Take medicines that increase bleeding risk or affect kidney function

Practical use tips for safer results

• Use the lowest effective dose: only enough to control symptoms.
• Use for the shortest time needed: if you need it for more than a few days, seek advice.
• Don’t double up: avoid combining with other NSAIDs (including some “multi-symptom” products).
• Stay hydrated: especially when unwell.
• Consider non-medicine measures: rest, gentle stretching, heat or ice, hydration, and symptom-specific care can reduce how much medicine you need.
• Keep a medication list: include dose and frequency to help identify interactions.

How to take tablets or capsules

• Swallow with water.
• If you get stomach upset, take after food.

How to take ibuprofen liquid (if applicable)

• Shake the bottle if instructed on the label.
• Measure carefully using an oral syringe or cup provided.
• Follow the dosing chart for the child’s weight and age as directed.

Alternative options

Depending on the cause of pain and your personal risk factors, other options may be considered. In general, for fever and pain, paracetamol (acetaminophen) is commonly used and may be gentler on the stomach than NSAIDs.

Possible alternatives

• Paracetamol: often used for fever and mild to moderate pain.
• Other NSAIDs (e.g., naproxen) may be appropriate for some people, but still carry NSAID risks.
• Non-drug measures: rest, ice/heat therapy, stretching, posture changes, massage, and physiotherapy for musculoskeletal pain.

Don’t combine medicines without checking whether they overlap in ingredients or interact. A pharmacist can help choose the safest option.

Market and legal context for Australia

In Australia, ibuprofen is supplied through pharmacies and some retail channels depending on the brand, strength and formulation. Medicines are regulated to ensure quality, safety and appropriate consumer information.

• Supply categories: Many ibuprofen products are available without a prescription (subject to product type and strength).
• Consumer guidance: Packaging usually includes dosing instructions, contraindications, and warnings tailored to the product.
• Pharmacist involvement: For products requiring specialist advice, pharmacists may assist with suitable selection and dosing.

If you are unsure whether ibuprofen is suitable for you, seek advice before using it.

Recent guidance and general best practice

Guidance for NSAIDs increasingly emphasises using the lowest effective dose for the shortest possible duration, especially in people at higher risk of side effects (such as older adults, those with a history of ulcers, or people with certain heart/kidney conditions).

• Minimise risk: consider taking with food, avoid unnecessary repeat dosing, and review whether continued use is needed.
• Be alert to red flags: stop and seek urgent help for signs of bleeding, severe allergy, or kidney-related symptoms.
• Medication review: if you take regular medicines, check interactions—particularly anticoagulants, antiplatelets, corticosteroids, and blood pressure/kidney-related medicines.
• Temperature and hydration: if you’re dehydrated (e.g., diarrhoea/vomiting), ask a pharmacist about safer options.

Always follow the directions on your product packaging and any advice from a healthcare professional.

Delivery and availability (online pharmacy)

Ibuprofen products are commonly available through Australian pharmacies and approved online retailers, subject to stock and shipping rules. Delivery timeframes vary by location and courier service. Many retailers provide tracking information once your order is dispatched.

• Availability: Tablets and liquid formulations are typically stocked; specific strengths may vary.
• Packaging: Medicines are dispatched in appropriate packaging to protect integrity and labelling.
• Delivery considerations: If you require a child-specific dosing product or a particular strength, confirm availability before ordering.

For the most accurate information about delivery fees, dispatch times, and eligibility, refer to the pharmacy’s product and checkout pages.

FAQ (Frequently asked questions)

1) How fast does ibuprofen work?

Many people notice symptom relief within 30–60 minutes after taking ibuprofen by mouth. Timing varies with the dose, formulation, and whether you take it with food. For some types of pain, consistent relief may take a little longer.

2) Can I take ibuprofen with paracetamol?

In many cases, people may use paracetamol and ibuprofen together or alternately for managing pain or fever, but this should be done carefully to avoid taking too much of either medicine. Always follow product directions and consider speaking to a pharmacist for a safe schedule.

3) What if my pain or fever comes back?

If symptoms return after ibuprofen wears off, it may be appropriate to take another dose per label instructions. If symptoms persist beyond a few days, or you have worsening symptoms, consult a healthcare professional.

4) Should I take ibuprofen every day?

Ibuprofen is generally used as needed for symptoms. If you find you need it regularly for ongoing pain, it’s better to discuss the underlying cause and a long-term plan with a pharmacist or clinician.

5) Can I take ibuprofen if I have asthma?

Some people with asthma may experience worsening symptoms with NSAIDs. If you’ve previously had reactions to aspirin or other NSAIDs, ask a pharmacist for advice before using ibuprofen.

6) Is it safe during pregnancy?

Pregnancy considerations are important with NSAIDs. Ibuprofen is generally not the first choice, especially later in pregnancy. Check with a pharmacist or healthcare professional for guidance relevant to your pregnancy stage.

7) What should I do if I accidentally take too much?

If you believe you have taken more than the recommended dose, seek urgent medical advice or contact a poison information service immediately. Keep the product packaging available for reference.

8) Can I drink alcohol while using ibuprofen?

It’s best to avoid alcohol while using ibuprofen. Alcohol can increase the risk of stomach irritation and bleeding. If you choose to drink, keep it minimal and discuss personal risk factors with a pharmacist.

9) Who should avoid ibuprofen?

People with a history of NSAID-related allergy, stomach ulcers or bleeding, significant kidney disease, or certain heart conditions should seek advice before use. Also consider drug interactions if you take anticoagulants, antiplatelets, corticosteroids, or medicines affecting kidneys.

10) Are there “natural” alternatives?

Some people use non-drug measures (heat/ice, gentle movement, hydration, rest). For fever, medical assessment may be needed depending on age and severity. If you’re seeking an alternative to NSAIDs, paracetamol is a common option—ask a pharmacist if you’re unsure.

Important: Always read the label and follow the directions for your specific ibuprofen product. If you’re pregnant, breastfeeding, have chronic medical conditions, or take other medicines, seek advice to ensure it’s safe for you.