Voltarol (Diclofenac) – Patient Guide (Australia)

Voltarol is a brand of diclofenac, a medicine from the non-steroidal anti-inflammatory drug (NSAID) group. It is used to relieve pain and inflammation in a range of conditions, including musculoskeletal injuries and painful inflammatory conditions.

This guide explains how Voltarol works, when it is typically used, dosing considerations, safety information, and practical tips for use in Australia. Always follow the instructions on the package or provided by a pharmacist.

1) Basic product information

• Brand: Voltarol
• Active ingredient: Diclofenac
• Drug class: NSAID (anti-inflammatory pain relief)
• Common dosage forms (varies by product): tablets/capsules, gel/cream, and sometimes other strengths or formulations
• General use: reduces pain, swelling and inflammation
• Where to find: available through Australian pharmacies and some retailers depending on formulation and scheduling

Note: Different Voltarol products contain different strengths and formulations. The timing and safety advice can vary slightly between oral and topical forms. Check your specific product label carefully.

2) How Voltarol works (mechanism of action)

Diclofenac works by reducing the production of substances in the body called prostaglandins. Prostaglandins are involved in:

• Inflammation (swelling and redness)
• Pain signalling (making pain feel stronger)
• Fever (in some circumstances)

Diclofenac inhibits enzymes called cyclo-oxygenase (COX), particularly COX-1 and COX-2. By lowering prostaglandins, it helps relieve pain and inflammation.

3) Pharmacokinetics (how the body handles diclofenac)

“Pharmacokinetics” describes what happens to diclofenac after you take it. The exact profile depends on the formulation:

• Absorption: Oral diclofenac is absorbed from the gastrointestinal tract. Peak levels typically occur within a few hours (for many immediate-release products); modified-release products may peak later.
• Distribution: Diclofenac binds significantly to plasma proteins. It can penetrate into inflamed tissues.
• Metabolism: Diclofenac is metabolised mainly in the liver via enzyme pathways.
• Excretion: Metabolites are removed primarily via the kidneys and to some extent through the bile/feces.

For topical diclofenac (e.g., gel), much less medicine enters the bloodstream than with oral formulations, though systemic absorption can still occur—especially with larger areas, higher doses, broken skin, or frequent use.

4) Typical uses and indications (what Voltarol is used for)

Voltarol (diclofenac) is used for pain relief where inflammation plays a role. Common indications include:

• Muscle and joint pain such as back pain, sprains, strains, and strains from overuse
• Arthritis and joint inflammation (e.g., osteoarthritis symptoms)
• Rheumatic and inflammatory conditions as advised by a clinician/pharmacist
• Localized pain such as sprains, tendonitis, and other soft-tissue injuries (particularly with gels/creams)
• Pain and inflammation in certain painful conditions where an NSAID is appropriate

Product-specific eligibility may differ depending on strength, formulation, and Australia’s scheduling rules at the time of publication. Your pharmacist can help match the right product to your situation.

5) Timing and how to take it

Oral Voltarol (tablets/capsules)

• Take with food or soon after a meal to reduce the chance of stomach irritation.
• Try to use the lowest effective dose for the shortest time needed to control symptoms.
• Space doses evenly according to the product label (e.g., multiple doses per day for immediate-release products).
• Do not exceed the maximum daily dose listed on the package.

Voltarol topical gel/cream

• Apply a thin layer to the affected area as directed.
• Wash your hands after applying (unless your hands are the treated area).
• Avoid contact with eyes, mouth, and broken skin.
• Allow to dry before covering with clothing.
• Do not apply to large areas or under occlusive dressings unless advised.

If your pain does not improve within the expected timeframe, or you worsen, seek advice from a pharmacist or doctor.

6) Food interactions (and what to do)

Food can affect stomach tolerance more than it affects diclofenac absorption. Taking oral diclofenac with food may reduce irritation and discomfort.

• Take with meals or after meals if you experience indigestion.
• Empty stomach use may increase the risk of stomach upset, pain, or nausea for some people.
• Gastro-protective strategies may be considered for higher-risk users, depending on your medical history—discuss with a pharmacist.

Topical diclofenac is generally less affected by food because it is used on the skin rather than swallowed.

7) Alcohol interactions

Combining NSAIDs like diclofenac with alcohol can increase the risk of stomach irritation and bleeding. Alcohol may also worsen dizziness or side effects in some people.

• Best approach: avoid or limit alcohol while using diclofenac.
• Seek advice urgently if you develop signs of gastrointestinal bleeding (e.g., black/tarry stools, vomiting blood, or severe abdominal pain).

8) Medicine interactions (important)

Diclofenac can interact with other medicines. Some interactions increase bleeding risk, kidney strain, or cardiovascular risks. Use extra caution and speak with a pharmacist if you take any of the following:

• Other NSAIDs (ibuprofen, naproxen, aspirin for pain): increases risk of stomach and kidney side effects. Avoid taking multiple NSAIDs together.
• Blood thinners (e.g., warfarin) or anticoagulants: diclofenac may increase bleeding risk.
• Antiplatelet medicines (e.g., clopidogrel): may increase bleeding risk.
• Corticosteroids (e.g., prednisone): increases risk of stomach irritation and bleeding.
• SSRIs/SNRIs (some antidepressants): may increase gastrointestinal bleeding risk.
• ACE inhibitors/ARBs (for blood pressure) and diuretics: combined use may affect kidneys, particularly in older adults or those dehydrated.
• Diuretics (“water tablets”): may increase kidney risk with NSAIDs.
• Lithium: NSAIDs can increase lithium levels (risk of toxicity).
• Methotrexate: NSAIDs can increase methotrexate toxicity depending on dose and timing.
• Digoxin: may increase digoxin levels in some circumstances.
• Diabetes medicines (some): NSAIDs can affect blood glucose control.

Herbal and complementary products can also interact. For example, some people use supplements that affect bleeding (e.g., high-dose omega-3 in some cases, or other products with blood-thinning effects). Ask your pharmacist if you are unsure.

9) Dosing (general guidance)

Dosing depends on:

• the specific Voltarol product you have (tablet strength, gel strength, or other formulation)
• your age and medical history
• the condition being treated
• whether you have risk factors for stomach, kidney, or cardiovascular side effects

Always follow the directions on the product packaging or the label. If you are unsure, ask a pharmacist.

General principles (apply to most NSAID use)

• Use the lowest effective dose.
• Use for the shortest time needed to control symptoms.
• Review need for continued use if symptoms persist beyond a few days.
• Do not combine with other NSAIDs.

When topical gel is used

• Apply only to the affected area.
• Use the quantity specified (often described in “pea-sized” or measured amounts depending on area). Over-application increases risk of systemic side effects and skin irritation.

Children: Product suitability and dosing can vary. Do not use diclofenac products in children unless you have confirmed the appropriate product, age suitability, and dosing instructions from a qualified healthcare professional.

10) Safety profile and who should be careful

Diclofenac can be very effective for pain relief, but it has potential side effects—most notably related to the gastrointestinal tract (stomach/intestines), kidneys, and cardiovascular system.

Common side effects

• For oral use: heartburn, indigestion, nausea, stomach discomfort
• For topical use: skin irritation, redness, itching, or a burning sensation where applied

Serious warnings (seek urgent medical help)

Get urgent help if you develop:

• Signs of stomach or bowel bleeding: black/tarry stools, vomiting blood, severe or persistent abdominal pain
• Allergic reaction: swelling of the face/lips, difficulty breathing, widespread rash, wheezing
• Serious skin reactions: blistering, peeling skin, or severe rash
• Chest pain, shortness of breath, weakness: possible cardiovascular event
• Signs of kidney problems: reduced urine output, unusual swelling, severe fatigue

Who should be extra cautious

• People with a history of stomach ulcers or gastrointestinal bleeding
• People with kidney disease or dehydration
• People with a history of heart disease, stroke, or risk factors (high blood pressure, high cholesterol, diabetes, smoking)
• People taking blood thinners or medicines that increase bleeding risk
• People with asthma that worsens with aspirin/NSAIDs
• Older adults (risk may be higher)
• People taking multiple medicines with potential interaction risks

If you have any of these risks, ask a pharmacist for advice on whether diclofenac is appropriate and the safest way to use it.

11) Practical use tips (to get the best results safely)

• Start early for soft-tissue injuries: using NSAIDs promptly after an injury may help reduce pain and inflammation, where appropriate.
• Combine with non-medicine measures: rest, gentle movement, ice (for acute injuries), heat (for stiffness), stretching, and supportive footwear can improve outcomes.
• Do not exceed the dose: using more won’t necessarily improve pain and may increase side effects.
• Watch for improvement: if pain is not improving after a short trial, seek advice rather than continuing long-term.
• Keep a record: note when you took doses and how your pain changes—useful if you speak to a pharmacist.
• For topical products: protect treated skin from sun exposure and avoid applying under occlusive dressings unless advised.

12) Alternative options (if diclofenac isn’t suitable)

Depending on your symptoms and risk factors, alternatives may include:

Other medicines

• Paracetamol (acetaminophen): helpful for pain with a different side-effect profile; does not reduce inflammation as strongly.
• Other NSAIDs: ibuprofen or naproxen may be options for some people, but they share many of the same risks as diclofenac.
• Topical alternatives: other topical anti-inflammatory gels or rubs may provide localized relief.

Non-medicine approaches

• Physiotherapy/exercise therapy for back pain, sprains, and chronic joint problems
• Heat/ice strategies tailored to acute vs chronic symptoms
• Supportive braces or ergonomic adjustments

A pharmacist can help you choose the safest option based on your health history, age, and other medicines.

13) Australia market and legal context (consumer information)

In Australia, availability and classification of medicines can vary by product formulation, strength, and intended use. Diclofenac products may be supplied under different scheduling categories depending on the form (oral vs topical) and strength.

When buying online, you may be asked to confirm suitability based on safety questions (for example, history of ulcers, kidney disease, heart conditions, or other interacting medicines). This helps ensure responsible supply in line with Australian medicines regulations and pharmacy practice standards.

Pharmacists can provide guidance on:

• whether diclofenac is appropriate for your symptoms
• how to use it safely
• potential interactions with your current medicines
• when to seek further medical assessment

14) Recent guidance and safety updates (general themes)

Ongoing regulatory and professional guidance for NSAIDs—including diclofenac—has consistently emphasized:

• Lower dose, shorter duration where possible
• Assessment of cardiovascular and gastrointestinal risk
• Avoiding combinations with other NSAIDs and certain interacting medicines
• Prompt attention to warning signs such as GI bleeding or allergic reactions

Because guidance can evolve, it’s wise to check the latest product information and consult a pharmacist if you have ongoing or complex health conditions.

15) Delivery and availability (online pharmacy)

Voltarol products are commonly available for online ordering through Australian pharmacies, depending on the specific formulation and scheduling. Availability can change due to supplier stock or product updates.

• Dispatch: orders are typically dispatched within 1–2 business days (exact time may vary).
• Delivery times: may vary by location and delivery service.
• Product packaging: your order will be supplied in manufacturer packaging with dosing instructions.

If you require delivery to remote areas, please review the delivery estimates at checkout. If your product is temporarily out of stock, the pharmacy may offer alternatives or notify you.

16) FAQ (Frequently asked questions)

Can I take Voltarol with other pain medicines?

You should generally avoid taking other NSAIDs at the same time (e.g., ibuprofen or naproxen), because this increases risk of side effects. Paracetamol may be an alternative for pain if appropriate, but check with a pharmacist if you have other conditions or medicines.

How quickly does diclofenac work?

Many people notice pain relief within hours. The exact timing depends on the formulation (oral vs topical) and the condition. If there is no improvement after a short trial, or symptoms worsen, seek advice.

Is Voltarol gel as effective as tablets?

Topical diclofenac can be effective for localized joint and soft-tissue pain. Oral diclofenac may be more suitable for more widespread pain or deeper inflammation. Your pharmacist can help select the best formulation for your symptoms and risk factors.

What if I miss a dose?

If you miss a dose, take it when you remember unless it’s close to the next dose. Do not take a double dose to make up for the missed one. Follow the product label instructions.

Who should not use diclofenac?

Diclofenac may not be suitable for people with certain medical histories such as: stomach ulcers or bleeding, significant kidney disease, certain heart conditions, or known allergy to NSAIDs. It may also be unsuitable for those with NSAID-sensitive asthma. Ask a pharmacist if you are unsure.

Can I use Voltarol if I have asthma?

Some people with aspirin/NSAID-sensitive asthma may experience bronchospasm with NSAIDs. If you have ever had asthma symptoms triggered by aspirin or NSAIDs, seek advice before using diclofenac.

Does Voltarol interact with antidepressants or blood thinners?

Yes, diclofenac can interact with medicines that affect bleeding risk, including some antidepressants (SSRIs/SNRIs) and blood thinners. This combination may increase gastrointestinal bleeding risk. Check with a pharmacist.

Can I drink alcohol while using Voltarol?

It is best to avoid or limit alcohol. Alcohol can increase the risk of stomach irritation and bleeding with NSAIDs.

What should I do if I get stomach pain or indigestion?

If you develop stomach pain, heartburn, persistent nausea, or indigestion, stop the NSAID and seek advice. Do not continue without professional guidance, especially if symptoms are severe or persistent.

How should I store Voltarol?

Store in a cool, dry place according to the package instructions. Keep medicines out of reach of children.

Quick reference table: key points at a glance

Important: This information is a general consumer guide. It does not replace the directions on your specific Voltarol product packaging. If you have questions about suitability, interactions, or dosing for your personal situation, ask a pharmacist.