Voltarol (Diclofenac) – Patient Guide (UK)

Voltarol is a brand name for medicines containing diclofenac, a well-known pain-relieving medicine from the group called non-steroidal anti-inflammatory drugs (NSAIDs). It helps reduce pain, inflammation and swelling in conditions where those symptoms are important.

This guide explains how Voltarol works, how it is used, what to consider with food, alcohol and other medicines, and how to use it safely. It is written for people in the United Kingdom.

1) Basic Product Information

Important: Different Voltarol products (for example tablets vs gels) may have different strengths and directions. Always follow the instructions provided with the specific item you have.

2) How Voltarol Works (Mechanism of Action)

Diclofenac works by blocking enzymes called cyclo-oxygenases (COX), especially COX-1 and COX-2. These enzymes help make chemicals called prostaglandins.

• Prostaglandins contribute to pain, swelling and inflammation.
• By reducing prostaglandin production, diclofenac helps to relieve pain and reduce inflammation.

Because Voltarol is an NSAID, it may also reduce fever and tenderness associated with inflammation.

3) Pharmacokinetics (How the Body Handles It)

Pharmacokinetics explains what the body does with a medicine—how it is absorbed, distributed, metabolised and excreted. Exact details can vary depending on the formulation (for example tablets vs gel).

3.1 Absorption

• Oral diclofenac (tablets/capsules) is absorbed through the digestive system.
• Topical diclofenac (gels/creams) is absorbed through the skin; overall blood levels are usually lower than oral use.

3.2 Distribution

• Diclofenac distributes into body tissues where it is needed to reduce local inflammation and pain.

3.3 Metabolism

• Diclofenac is processed mainly in the liver (metabolised into other compounds).

3.4 Elimination

• It is cleared from the body mainly via the kidneys (and also through bile/feces to a lesser extent).

Practical meaning: If you have liver or kidney problems, or you take other medicines that affect them, you should check with a pharmacist or clinician before using diclofenac.

4) Typical Uses in the UK

Voltarol is commonly used for pain and inflammation affecting muscles, joints and soft tissues. The exact indications depend on the specific product (oral vs topical, strength, and formulation).

Common indications

• Back pain and other mechanical musculoskeletal pain (for short-term relief)
• Sprains, strains, and injuries involving inflammation
• Joint pain due to conditions such as osteoarthritis (where appropriate)
• Arthritis pain and stiffness (again, dependent on product/strength)
• Localised pain such as tendonitis or sports-related aches (especially with topical products)

When topical Voltarol may be helpful

• If the pain is limited to a specific area (e.g., sore knee, elbow, wrist), topical diclofenac may be a practical option.
• It may reduce exposure to the rest of the body compared with oral NSAIDs, depending on how it is used.

5) When to Take It: Timing and How Often

The best timing depends on your product type and strength. Always follow the dosage instructions on your pack. Below are general timing principles commonly used for NSAID products.

General guidance

• Use the lowest effective dose for the shortest possible time.
• If you need it for more than a few days (or symptoms are worsening), seek advice from a healthcare professional.
• For oral forms, NSAIDs are often taken with food or after meals to reduce stomach irritation.

Topical timing

• Topical diclofenac is typically applied to the affected area as directed.
• Wash your hands after applying (unless the treated area involves your hands).
• Do not apply to broken skin and avoid covering with airtight dressings unless advised.

Tip: If you are using multiple pain products (for example, gel plus tablets), make sure you do not accidentally take too much diclofenac or combine NSAIDs.

6) Food Interactions (Taking with Meals)

Food can affect how quickly and how comfortably diclofenac is tolerated, especially for oral products. It does not usually reduce the medicine’s effectiveness, but it can improve stomach comfort.

Oral diclofenac

• With or after food can help reduce the risk of stomach upset.
• If you get indigestion or stomach pain, try taking it with a meal (unless your specific product instructions say otherwise).

Topical diclofenac

• Food does not directly affect topical absorption in the same way, because it is absorbed through the skin.

If you have a history of stomach ulcers, bleeding, or severe indigestion, you should be especially cautious with oral NSAIDs.

7) Alcohol and Medicine Interactions

Alcohol

Drinking alcohol while taking NSAIDs can increase the chance of stomach irritation and gastrointestinal bleeding, and it may worsen side effects. For the safest approach, limit or avoid alcohol while using Voltarol.

Other medicines that may interact

Diclofenac can interact with several commonly used medicines. This is particularly important if you take medicines long-term or multiple medicines for conditions such as blood pressure, heart disease, gout, or mental health.

• Other NSAIDs (including ibuprofen, naproxen, aspirin for pain): avoid combining unless specifically advised.
• Anticoagulants (e.g., warfarin) and antiplatelet medicines (e.g., clopidogrel): increased bleeding risk.
• Corticosteroids (e.g., prednisolone): higher risk of stomach problems.
• SSRIs/SNRIs for depression or anxiety (e.g., sertraline, citalopram, venlafaxine): may increase bleeding risk.
• Blood pressure medicines (ACE inhibitors/ARBs) and diuretics: NSAIDs can affect kidney function and reduce blood pressure control.
• Diabetes medicines (some types): may alter blood sugar effects in some people.
• Lithium and methotrexate: levels may change; monitoring may be needed.
• Digoxin: NSAIDs can increase digoxin levels in some cases.
• Other medicines affecting the liver or kidney: caution may be needed.

If you are unsure about interactions, a pharmacist can help you check suitability for your specific product and your current medicines.

8) Dosing: How Much to Use

Dosing depends on the exact Voltarol product (tablets vs topical gel vs patches) and your age/condition. Always use the pack instructions.

General principles

• Adults should generally follow the recommended dose
• Do not exceed the maximum daily dose listed for your product.
• Consider whether non-medicine measures (rest, heat/cold, physiotherapy advice) could reduce the need for repeated doses.

Example timing approach (oral products)

Many oral diclofenac products are taken 1 to 3 times daily depending on formulation and strength. Some are “modified release” and require different timing than immediate-release tablets.

Always check your specific pack. If you would like, tell us the exact Voltarol form and strength shown on your packaging and we can help you interpret the dosing directions you already have.

Children and teenagers

Diclofenac use in younger people may depend on the product and age category. It is important to follow age-specific directions or seek advice.

9) Safety Profile: Who Should Be Careful and Why

Like all NSAIDs, diclofenac can cause side effects. Most people tolerate it well when used correctly, but certain risks are important to understand. Risk depends on dose, duration and your personal medical history.

Common side effects

• Indigestion, heartburn, stomach discomfort
• Nausea or mild stomach pain
• Headache or dizziness in some people
• Skin irritation at application site for topical products

Serious side effects (seek medical advice urgently)

• Signs of stomach bleeding: black/tarry stools, vomiting blood or material like coffee grounds, severe stomach pain
• Allergic reaction: swelling of face/lips, wheezing, severe rash, difficulty breathing
• Chest pain, shortness of breath, sudden weakness or speech problems (possible heart or blood vessel events)
• Severe skin reactions: widespread blistering rash, peeling skin
• Worsening kidney problems: reduced urine output, significant swelling
• Yellowing of skin/eyes (jaundice), dark urine (possible liver issue)

Who should use diclofenac with extra caution?

• People with a history of stomach ulcer or gastrointestinal bleeding
• People with heart disease, previous stroke, or high cardiovascular risk
• People with uncontrolled high blood pressure
• People with kidney disease or dehydration
• People with asthma that is sensitive to painkillers/NSAIDs
• People with liver disease
• Older adults, who may be at higher risk of side effects

Pregnancy (important)

NSAIDs may not be suitable in all stages of pregnancy. If you are pregnant, planning pregnancy, or breastfeeding, check advice before using diclofenac.

10) Practical Use Tips (Getting the Best Results)

• Use the smallest dose that works. If symptoms improve, consider stopping rather than continuing.
• Apply topical diclofenac correctly. Apply a thin layer to the affected area and rub gently.
• Avoid broken skin. Do not apply to cuts, grazes or areas with infection.
• Keep clothing breathable. Avoid covering with tight or airtight bandages unless instructed.
• Give it time. Pain relief may take varying time depending on the formulation and your condition.
• Do not “stack” NSAIDs. Using multiple NSAIDs increases risk without guaranteed extra benefit.
• Seek advice early. If pain lasts beyond the expected timeframe or you have red-flag symptoms (fever, sudden severe pain, weakness, numbness), obtain professional guidance.

Non-medicine measures that can help

• Rest short term (avoid activities that worsen pain)
• Heat or ice depending on whether pain is new/inflamed or longstanding
• Gentle mobility when appropriate
• Physiotherapy for persistent musculoskeletal pain

11) Alternative Options (If Voltarol Is Not Suitable)

Depending on your symptoms and health history, alternatives may include other pain relief methods or different medicine classes. These options should be chosen based on safety for you.

Alternative medicines

• Paracetamol (acetaminophen): often easier on the stomach; does not have anti-inflammatory effects.
• Other NSAIDs: such as ibuprofen or naproxen may be options, but they share similar NSAID risks.
• Topical pain options: topical NSAIDs (different brands) or non-NSAID topical analgesics, depending on availability.

Non-medicine options

• Exercise and physiotherapy for joint and back pain
• Supportive devices (e.g., braces)
• Cold/heat therapy
• Weight management for arthritis pain in relevant cases

If you have a history of stomach ulcers, kidney disease, or cardiovascular disease, ask a pharmacist what alternatives may be safer for you.

12) Market and Legal Context in the UK (What to Expect)

In the UK, NSAID products are sold under different regulatory classifications depending on the formulation, strength and intended use. Some diclofenac-containing products are available over the counter, while others may be supplied under pharmacist guidance or may be prescription-only. Availability can also vary by pack size and whether it is intended for short-term self-treatment.

You may see guidance encouraging the lowest effective dose and short treatment duration, reflecting safety considerations for NSAIDs. Pharmacies and online sellers in the UK typically require customers to complete suitability checks based on age and medical history.

Recent safety and guidance themes

• Limit duration and dose: emphasis on using the lowest effective dose for the shortest time.
• Higher-risk patients need extra caution for cardiovascular and gastrointestinal effects.
• Do not combine NSAIDs: guidance commonly discourages taking more than one NSAID.
• Check interactions: attention to anticoagulants, steroids, SSRIs/SNRIs and antihypertensives.

Policies and recommendations can be updated by UK regulators and public health bodies. Always read the information leaflet included with your product.

13) Delivery and Availability (UK)

Voltarol (diclofenac) products are typically available through UK pharmacies and pharmacy-led online services. Delivery availability depends on stock, the specific product, and the delivery region.

What to check before ordering

• The exact product form (tablet/capsule vs gel/cream/patch).
• The strength and size of pack.
• Delivery options and estimated dispatch times.

If a product is not suitable based on your answers during checkout, the pharmacy may offer alternatives or advise you to speak to a healthcare professional.

14) Frequently Asked Questions (FAQ)

Is Voltarol the same as diclofenac?

Yes. Voltarol is a brand name. The active ingredient is diclofenac, an NSAID pain-relieving medicine. Different Voltarol products may have different strengths and forms.

How quickly does it work?

Onset depends on the formulation and your condition. Oral NSAIDs may start relieving symptoms within hours. Topical products may relieve pain more gradually as diclofenac is absorbed through the skin. If you get little benefit after a short period, consider speaking to a pharmacist.

Can I take Voltarol with food?

For oral diclofenac, taking it with or after food can help reduce stomach irritation for many people. Follow your product’s instructions.

Can I drink alcohol while using Voltarol?

Alcohol can increase the chance of stomach irritation and bleeding when using NSAIDs. It’s best to limit or avoid alcohol while taking diclofenac.

What should I not combine with Voltarol?

Avoid combining with other NSAIDs (such as ibuprofen, naproxen, or aspirin for pain) unless specifically advised. Also be careful with medicines that increase bleeding risk (e.g., anticoagulants) or affect kidney function.

Will Voltarol help with swelling?

Yes. Diclofenac reduces inflammation, so it may help with swelling related to musculoskeletal problems. Topical products can be helpful for localised inflammation.

Can I use Voltarol gel on broken skin?

No. Do not apply topical diclofenac to broken or infected skin. If your skin is irritated, stop and seek advice.

How long can I use it for?

Use it for the shortest time and at the lowest effective dose. If pain persists, keeps returning, or worsens, get professional advice.

When should I get urgent help?

Seek urgent medical advice if you develop symptoms such as signs of allergic reaction, stomach bleeding, chest pain, severe shortness of breath, sudden weakness, or a severe skin rash.

Are there safer alternatives for people with sensitive stomachs?

Sometimes paracetamol or other non-NSAID approaches may be considered, but it depends on your condition and health history. A pharmacist can help you choose the safest option for you.

15) Summary: Key Points to Remember

• Voltarol contains diclofenac, an NSAID that relieves pain and inflammation.
• Use the lowest effective dose for the shortest possible time.
• For oral forms, take with food to reduce stomach upset (where appropriate).
• Avoid alcohol and be cautious with interacting medicines (especially other NSAIDs, anticoagulants, steroids and SSRIs/SNRIs).
• Stop and seek help if you notice serious side effects such as bleeding or allergic reactions.

Always read the patient information leaflet supplied with your particular Voltarol product, as dosing instructions and suitability can vary by formulation.