Best Anti-Inflammatory Gel Australia: Voltaren vs Nurofen (2026)

Topical anti-inflammatory gels make sense when the pain is localised and you would rather not jump straight to tablets. They are useful for sprains, sore joints, overworked muscles, and the kind of niggling pain where you can point to the exact spot that hurts. Used properly, they can give worthwhile relief with less whole-body exposure than an oral NSAID.

The shelf can look more complicated than it really is. Most of the meaningful differences come down to the active ingredient, how often you need to reapply it, and whether you are paying extra for the brand name. We compared the main options with those practical differences in mind.

Among OTC options available in Australia, Voltaren Osteo Gel 12 Hourly contains the highest concentration of diclofenac (2.32% diclofenac diethylamine, equivalent to 2% diclofenac sodium) and is applied twice daily, making it the strongest formulation in the Voltaren range. Standard Voltaren Emulgel (1.16% diclofenac diethylamine, equivalent to 1% diclofenac sodium) is the most widely studied option and is applied three to four times daily. Nurofen Gel (5% ibuprofen) is an alternative that may help relieve localised pain and inflammation from sprains and sports injuries. All are topical NSAIDs that ease symptoms at the site of application — they do not cure the underlying condition.

How We Assessed

• radio_button_uncheckedActive ingredient and concentration: The type of NSAID (diclofenac, ibuprofen, piroxicam) and its percentage strength.
• radio_button_uncheckedClinical evidence: Published research supporting efficacy for the listed indications.
• radio_button_uncheckedTGA registration: All products must hold a valid AUST L or AUST R listing.
• radio_button_uncheckedApplication frequency: How many times per day you need to apply — fewer applications means better convenience.
• radio_button_uncheckedValue per tube: Price for standard tube sizes at major Australian pharmacies, checked in early 2026.
• radio_button_uncheckedSuitability: Who each product is best for (acute injuries, chronic joint pain, athletes, budget-conscious buyers).
• radio_button_uncheckedAvailability: Stocked at Chemist Warehouse, Priceline Pharmacy, Amcal, Terry White Chemmart, and/or Blooms The Chemist.

How Do Anti-Inflammatory Gels Work?

Topical NSAIDs work by penetrating through your skin to reach the inflamed tissue underneath. Once there, they block enzymes called cyclooxygenase (COX-1 and COX-2) — the same enzymes targeted by oral anti-inflammatory tablets like ibuprofen. By blocking these enzymes, the gel reduces the production of prostaglandins, which are chemical messengers responsible for pain, swelling, and inflammation at the injury site.

The key advantage of applying an NSAID to the skin rather than swallowing a tablet is that the active ingredient concentrates in the local tissue, with far less reaching your bloodstream. This means effective pain relief at the site with substantially fewer systemic side effects — particularly the stomach irritation, ulcer risk, and cardiovascular concerns associated with oral NSAIDs taken regularly.

What Is the Strongest Voltaren You Can Buy?

The strongest over-the-counter Voltaren gel in Australia is Voltaren Osteo Gel 12 Hourly. It contains 2.32% diclofenac diethylamine (equivalent to 2% diclofenac sodium) — double the concentration of standard Voltaren Emulgel, which contains 1.16% diclofenac diethylamine (equivalent to 1% diclofenac sodium). Because each application delivers more diclofenac to the tissue, the Osteo Gel only needs to be applied twice a day, whereas standard Emulgel is applied three to four times daily.

A higher concentration is not automatically the right choice for everyone. Voltaren Osteo Gel 12 Hourly is specifically indicated for the temporary relief of pain and inflammation from osteoarthritis of superficial joints such as the knees and hands. Standard Emulgel is the more general-purpose option for everyday strains, sprains and sore muscles. If your main goal is fewer applications for an ongoing joint problem, the 12 Hourly is the stronger, more convenient pick. If you want a flexible, widely available gel for short-term injuries, standard Emulgel is usually enough.

Anti-Inflammatory Gels Compared

Note: Prices are approximate retail prices at major Australian pharmacies as of early 2026. Prices vary between stores and may change. Always check current pricing at your local pharmacy.

Our Top Picks

1. Best Overall: Voltaren Emulgel (Diclofenac 1%)

Voltaren Emulgel comes out on top because diclofenac is the topical NSAID with the strongest evidence behind it, and the product is easy to live with day to day. The gel spreads well, absorbs without much mess, and is suitable for both short-term injury pain and ongoing osteoarthritis flare-ups. It is not the cheapest option on the shelf, but it is the easiest benchmark for how well this category should work.

2. Best for Convenience: Voltaren Osteo Gel 12 Hourly (Diclofenac 2%)

If applying gel three or four times a day does not fit your routine, Voltaren Osteo Gel 12 Hourly is the standout choice. It contains double the diclofenac concentration (2.32% diclofenac diethylamine, equivalent to 2% diclofenac sodium) compared to standard Emulgel, meaning you only need to apply it twice daily — morning and evening. It is specifically indicated for osteoarthritis of superficial joints such as the knees and hands. The trade-off is a higher price per tube, but the reduced application frequency may improve adherence, which matters for chronic conditions.

3. Best Budget: Chemists' Own Diclofenac Gel 1%

Here is the open secret of anti-inflammatory gels: generic diclofenac gel contains exactly the same active ingredient, at exactly the same concentration, as Voltaren Emulgel — and it costs significantly less. Chemists' Own Diclofenac Gel 1% is a pharmacy-brand alternative that must meet the same TGA registration standards. You can typically save 30-50% compared to the Voltaren-branded version. Other pharmacy chains stock their own equivalents too — Priceline Pharmacy and Amcal both carry generic diclofenac gels at similar savings.

4. Best for Sports Injuries: Nurofen Joint & Muscular Pain Gel (Ibuprofen 5%)

Nurofen Gel uses ibuprofen (5%) rather than diclofenac. While diclofenac has a marginally larger evidence base for topical use, ibuprofen is also a well-studied NSAID with proven anti-inflammatory and analgesic effects when applied to the skin. A Cochrane review found topical ibuprofen effective for acute musculoskeletal pain, with a number needed to treat (NNT) of around 3.9 — meaning roughly 1 in 4 people get meaningful benefit beyond placebo. It is a solid choice for acute sprains, strains, and sports injuries, and many Australians already know and trust the Nurofen brand from oral ibuprofen.

Other Options Worth Knowing About

Diclofenac and ibuprofen gels are not the only topical products on the pharmacy shelf, and a couple of alternatives are worth understanding so you can tell them apart from a true anti-inflammatory NSAID.

• radio_button_uncheckedDifflam Gel (benzydamine hydrochloride): Benzydamine is an anti-inflammatory and analgesic, but it is a different class of medicine to diclofenac and ibuprofen — it is not an NSAID in the usual sense. Difflam Gel may help relieve pain and inflammation in muscles and soft tissue, and can be an option if you have had skin sensitivity to diclofenac or ibuprofen gels. Always read the label and ask your pharmacist whether it suits your situation.
• radio_button_uncheckedFisiocrem Solugel: A popular non-NSAID, plant-based topical product containing herbal extracts (such as arnica, hypericum and calendula). It is marketed for the temporary relief of muscular aches and minor soft-tissue discomfort, but it does not contain a topical NSAID and has a much smaller clinical evidence base than diclofenac or ibuprofen gels. It can suit people who prefer a natural product or cannot use NSAIDs, but it is not a like-for-like replacement when inflammation is the main problem.
• radio_button_uncheckedHeat rubs (Deep Heat, Dencorub): Counter-irritants that create a warming or cooling sensation rather than reducing inflammation — see the section below on how these differ from a genuine anti-inflammatory gel.

Topical vs Oral NSAIDs: When Is a Gel Better Than a Tablet?

For localised pain — a sore knee, a sprained ankle, a stiff shoulder — topical NSAIDs are often the smarter first choice. Clinical evidence shows that for osteoarthritis of the knee and hand, topical NSAIDs provide comparable pain relief to oral NSAIDs. The major advantage is safety: topical application results in blood levels roughly 5–15% of those achieved with oral dosing, which dramatically reduces the risk of gastrointestinal side effects such as stomach ulcers, as well as cardiovascular and kidney risks.

The TGA, along with international guidelines (including NICE in the UK), now recommends topical NSAIDs as a first-line treatment for osteoarthritis of the knee and hand before stepping up to oral options. This is particularly important for older Australians, who are at higher risk of NSAID-related stomach bleeding.

How to Apply Anti-Inflammatory Gel Correctly

Getting the most out of your topical NSAID means applying it properly. Research shows that many people under-dose or apply incorrectly, reducing effectiveness. Here is the recommended approach:

• radio_button_uncheckedUse the right amount: For most gels, apply a 2–4 cm strip (roughly the size of a 20-cent coin to a 50-cent coin, depending on the area) per application. Your pharmacist can advise on the correct amount for the specific joint or muscle group.
• radio_button_uncheckedGently rub it in: Massage the gel into the skin over and around the painful area until it is absorbed. Do not just leave a thick layer sitting on the surface.
• radio_button_uncheckedAvoid sensitive areas: Do not apply to the eyes, lips, inside the nose or mouth, or any mucous membranes. Keep it away from broken, infected or irritated skin, and avoid spreading it over very large areas of the body.
• radio_button_uncheckedWash your hands after application: Unless your hands are the area being treated, wash them thoroughly to avoid accidentally transferring the gel to your eyes, mouth, or other sensitive areas.
• radio_button_uncheckedAllow it to dry before covering: Wait at least 10–15 minutes before covering the area with clothing or bandages. Do not apply under airtight dressings unless directed by a doctor.
• radio_button_uncheckedStick to the recommended frequency and maximum: For standard (1%) Emulgel, apply up to 3–4 times daily. For 12-hourly (2%) gels, apply twice daily. Always check the pack for the maximum daily amount and do not exceed it.
• radio_button_uncheckedGive it time: Topical NSAIDs may take several days of regular use before you notice the full benefit, especially for ongoing conditions. Do not give up after a single application.

Safety: Who Should Avoid Anti-Inflammatory Gels?

• radio_button_uncheckedBroken or damaged skin: Never apply anti-inflammatory gel to cuts, open wounds, infected skin, or areas affected by eczema or dermatitis. The gel is designed for intact skin only.
• radio_button_uncheckedPregnancy and breastfeeding: Topical NSAIDs (including diclofenac and ibuprofen gels) should be avoided in the third trimester of pregnancy. Use in earlier pregnancy or while breastfeeding should only be on the advice of your doctor or pharmacist.
• radio_button_uncheckedChildren under 12: Most topical NSAID products in Australia are not recommended for children under 12 years. Always check the label and consult your pharmacist.
• radio_button_uncheckedAspirin-sensitive asthma: If you have asthma triggered by aspirin or other NSAIDs, avoid topical NSAID gels as they may trigger symptoms in sensitive individuals.
• radio_button_uncheckedSun exposure: Some topical NSAIDs (particularly diclofenac) can increase skin sensitivity to sunlight. Avoid prolonged sun exposure and tanning beds on treated areas. Cover the area or use sunscreen if going outdoors.
• radio_button_uncheckedOther NSAID use: If you are already taking oral NSAIDs (ibuprofen, naproxen, celecoxib), adding a topical NSAID increases your total NSAID exposure. Discuss this with your pharmacist or GP.
• radio_button_uncheckedKidney problems, heart conditions and other medicines: Although far less of the active ingredient reaches the bloodstream than with tablets, absorption is not zero. If you have kidney impairment, heart failure, are taking blood-thinning medication, or have other ongoing health conditions, check with your pharmacist or GP before regular use.
• radio_button_uncheckedOlder adults: Topical NSAIDs are not banned for people over 65 — in fact they are often preferred over tablets in this age group. The reason is that oral NSAIDs carry a higher risk of stomach bleeding, kidney and heart problems in older people, so a gel can be a lower-risk way to manage localised pain. Still, talk to your pharmacist about regular use.
• radio_button_uncheckedKnown allergy: Do not use if you have had a previous allergic reaction to diclofenac, ibuprofen, aspirin, or any other NSAID.

Anti-Inflammatory Gels vs Heat Rubs: What Is the Difference?

Products like Deep Heat and Dencorub are not anti-inflammatory gels. They are counter-irritants — they create a warming or cooling sensation on the skin that distracts from the underlying pain, but they do not reduce inflammation. Their active ingredients (typically methyl salicylate, menthol, or capsaicin) work through a completely different mechanism. They can provide temporary comfort for muscle aches and stiffness, but they are not a substitute for a genuine topical NSAID when inflammation is the problem.

What to Look For When Buying an Anti-Inflammatory Gel

• radio_button_uncheckedCheck the active ingredient: Look for diclofenac diethylamine (1.16% or 2.32%) or ibuprofen (5%). These are the proven topical NSAIDs. Avoid products that only contain menthol or methyl salicylate if you want genuine anti-inflammatory action.
• radio_button_uncheckedConsider application frequency: If you want convenience, the 12-hourly (2%) diclofenac gel requires only two applications per day. Standard gels need 3–4 applications.
• radio_button_uncheckedCompare price per gram: Tubes range from 50g to 150g. A larger tube is almost always better value per gram. Calculate the cost per gram to compare fairly between brands.
• radio_button_uncheckedGo generic if price matters: Generic diclofenac gels contain the same TGA-approved active ingredient as Voltaren. They are bioequivalent and work the same way.
• radio_button_uncheckedCheck the expiry date: Topical NSAIDs do have expiry dates. If you use them infrequently, a smaller tube may be more practical to avoid waste.

Frequently Asked Questions

What is the strongest anti-inflammatory gel you can get in Australia?

Among over-the-counter options, Voltaren Osteo Gel 12 Hourly is the highest-concentration topical diclofenac gel — 2.32% diclofenac diethylamine (equivalent to 2% diclofenac sodium), applied twice daily. It is the strongest gel in the Voltaren range. "Strongest", though, does not always mean "best for you": the Osteo Gel is formulated for osteoarthritis of the knees and hands, while a standard 1% diclofenac or 5% ibuprofen gel is often the more practical choice for everyday strains and sports injuries. Ask your pharmacist which concentration suits your situation.

Is there anything better than Voltaren gel?

There is no single "best" gel for everyone. Generic diclofenac gels contain the same active ingredient as Voltaren Emulgel at a lower price, so they offer better value. Nurofen Gel (5% ibuprofen) may suit acute sports injuries or people who react to diclofenac. Voltaren Osteo Gel 12 Hourly is stronger and more convenient for ongoing joint pain. The right product depends on what is causing your pain, how often you want to apply it, and your budget — not on brand name alone.

Do anti-inflammatory gels actually work?

Yes — topical NSAIDs have a genuine evidence base, particularly diclofenac and ibuprofen gels. Clinical reviews show they can provide meaningful relief for localised musculoskeletal pain and for osteoarthritis of the knee and hand, with comparable benefit to oral NSAIDs for these uses but far less of the active ingredient reaching the bloodstream. They work best when applied at the correct dose and frequency, and with regular use over several days for ongoing conditions. They relieve symptoms rather than cure the underlying problem.

Is Nurofen Gel better than Voltaren for tendonitis?

Neither is clearly superior for tendonitis. Both diclofenac (Voltaren) and ibuprofen (Nurofen Gel) are topical NSAIDs that may help relieve the localised pain and inflammation associated with tendon and soft-tissue conditions. Diclofenac has a marginally larger evidence base for topical use overall, while many people find ibuprofen gel works well for acute, sports-related flare-ups. If one does not help after about a week of correct use — or if the tendon pain is severe or persistent — see your GP or physiotherapist, as some tendon problems need more than a topical gel.

Why do people say those over 65 can't use Voltaren?

This is a common misunderstanding. People over 65 are not banned from using topical Voltaren — in fact, topical NSAIDs are often preferred over tablets in older adults. The caution applies mainly to oral NSAIDs, which carry a higher risk of stomach bleeding, and kidney and heart problems in older people. Because a gel delivers much less of the active ingredient to the bloodstream, it is generally a lower-risk way to manage localised pain. If you are over 65 and plan to use an anti-inflammatory gel regularly, it is still worth a quick chat with your pharmacist about your other medicines and health conditions.

Is Voltaren Emulgel better than generic diclofenac gel?

Not in terms of the active ingredient. Both contain the same concentration of diclofenac diethylamine (1.16%, equivalent to 1% diclofenac sodium). Generic products registered with the TGA must meet the same quality and bioequivalence standards. The main differences are branding, gel texture (due to different inactive ingredients), and price — generics are typically 30–50% cheaper.

Can I use anti-inflammatory gel and take ibuprofen tablets at the same time?

It is generally best to avoid combining topical and oral NSAIDs without medical advice. While the systemic absorption from topical gels is much lower than from tablets, combining them increases your total NSAID exposure and may raise the risk of side effects. If you need additional pain relief beyond what the gel provides, paracetamol is usually a safer option to combine. Speak to your pharmacist or GP for advice specific to your situation.

How long does it take for anti-inflammatory gel to work?

You may notice some pain relief within 1–2 hours of the first application. However, topical NSAIDs often provide their best results after several days of consistent, regular use — particularly for chronic conditions like osteoarthritis. For acute injuries such as sprains or strains, relief tends to be noticeable sooner. If you see no improvement after 7 days of regular use, consult your pharmacist or GP.

Can I use anti-inflammatory gel during pregnancy?

Topical NSAID gels should be avoided during the third trimester of pregnancy due to potential risks to the baby. Use during the first and second trimesters should only be on the advice of your doctor. If you are pregnant or planning to become pregnant, consult your GP or pharmacist before using any anti-inflammatory product — topical or oral.

Do I need a prescription for anti-inflammatory gel in Australia?

No. Diclofenac gel (1% and 2%) and ibuprofen gel (5%) are available over the counter in Australian pharmacies without a prescription. The standard 1% diclofenac products (Voltaren Emulgel and generics) are typically on open shelves. Some higher-strength or larger pack sizes may be behind the counter (pharmacist-only), so you may need to ask at the dispensary. Your pharmacist can help you choose the right product.

Is anti-inflammatory gel safe to use long term?

Topical NSAIDs have a better long-term safety profile than oral NSAIDs because far less of the active ingredient enters the bloodstream. Guidelines support their use for ongoing conditions like osteoarthritis. However, long-term use should be discussed with your GP, particularly if you are using the gel daily for more than a few weeks. Watch for skin irritation at the application site, which is the most common side effect with prolonged use.