Voltarol Gel vs Tablets: Understanding Topical and Oral Diclofenac

Voltarol products contain diclofenac, a non-steroidal anti-inflammatory drug (NSAID) used to reduce pain and inflammation. Diclofenac comes in topical forms, such as gels applied to the skin, and oral forms, such as tablets. They share an active ingredient, but they do not act in exactly the same way.

What Is the Difference Between Voltarol Gel and Tablets?

Both products use diclofenac to reduce inflammation and relieve pain. Voltarol gel is rubbed onto the skin close to the painful area, while tablets are taken by mouth and circulate throughout the body.

This difference matters. A gel may be practical when pain is limited to one accessible area, such as a knee, hand, ankle, or elbow. Tablets may be considered when a clinician determines that local treatment is unsuitable or has not provided enough relief. “Stronger” is not always “better”; the right option is the one that balances benefit with safety for the individual patient.

If you want background information on diclofenac brands and formulations, see this overview of Voltaren and diclofenac treatment options.

How Topical Diclofenac Gel Works

Topical diclofenac is applied directly to the skin over a painful joint, muscle, tendon, or other local area. Some medicine passes through the skin into nearby tissues, where it can help reduce inflammation and pain.

Because less diclofenac reaches the bloodstream than with tablets, topical treatment generally produces fewer whole-body side effects. That does not make it risk-free. It can still interact with other medicines and may not suit people with certain medical conditions or a history of NSAID reactions.

For knee osteoarthritis, clinical guidance commonly recommends trying a topical NSAID first when medication is needed. This approach can support pain relief while limiting systemic exposure. It should be used alongside non-drug measures such as appropriate movement, strengthening exercises, pacing, and weight management where relevant.

How Oral Diclofenac Tablets Work

Oral diclofenac tablets are absorbed through the digestive system and circulate in the bloodstream. This allows the medicine to act more broadly throughout the body, which may be useful for certain inflammatory pain conditions when prescribed by a clinician.

However, broader exposure also means broader risk. Oral NSAIDs can irritate the stomach and increase the risk of ulcers or bleeding. They can also affect kidney function, fluid retention, blood pressure, and cardiovascular risk. These risks can rise with higher doses, longer use, older age, and some existing health conditions.

For product-specific information on prescribed oral treatment, review your clinician’s directions and the details for Voltarol 100mg diclofenac tablets.

When a Gel May Be Considered

Localised Joint or Muscle Pain

A topical gel may suit pain that is limited to a small, reachable area. Examples can include mild to moderate pain from a sprain, strain, bruise, or osteoarthritis affecting a superficial joint. Applying treatment near the affected area is convenient and avoids swallowing another tablet.

Knee and Hand Osteoarthritis

Guidelines commonly favour a topical NSAID for knee osteoarthritis and suggest considering one for other joints. This is especially relevant when a person has risks that make oral NSAIDs less suitable. A gel will not repair cartilage or cure arthritis, but it may help manage pain so that movement and daily activity feel more manageable.

People With Higher Systemic-Risk Factors

A clinician may prefer a topical option for someone with a history of indigestion, ulcer disease, kidney problems, cardiovascular disease, or multiple regular medicines. Individual advice remains important because topical NSAIDs still carry warnings and may not be appropriate for everyone.

When Oral Tablets May Be Considered

Wider or More Complex Pain

Oral diclofenac may be considered for some patients with pain affecting more than one region or when pain is not easily treated with a local gel. A clinician should first identify the cause of pain and consider safer alternatives, particularly for long-term symptoms.

Short, Clinician-Guided Courses

When oral diclofenac is appropriate, medical guidance generally supports the lowest effective dose for the shortest practical duration. This is not a medicine to take casually for every ache after a busy weekend—your body may be sore, but your stomach and kidneys still deserve respect.

When Topical Treatment Is Not Enough

If a gel does not provide adequate relief, do not automatically add oral diclofenac. Combining diclofenac products can increase total NSAID exposure. Speak with a doctor or pharmacist first, especially if you take aspirin, blood thinners, steroids, blood-pressure medicines, or other pain medicines.

Safety: Gel Versus Tablets

Stomach and Bleeding Risk

Oral diclofenac can cause serious gastrointestinal adverse effects, including bleeding, ulcers, and perforation. These can occur without clear warning symptoms. Topical treatment usually results in lower systemic exposure, but it cannot eliminate risk completely.

Heart, Blood Pressure, and Kidney Health

NSAIDs can increase the risk of serious cardiovascular events, including heart attack and stroke. They may also affect blood pressure, fluid balance, and kidney function. People with heart disease, prior stroke, kidney disease, uncontrolled hypertension, or heart failure should seek clinical advice before using diclofenac in any form.

Skin Effects With Gel

With topical gel, the most likely problems occur at the application site: itching, redness, rash, dryness, or sensitivity. Do not apply gel to broken, infected, or irritated skin. Wash hands after use unless the hands are the treatment area, and avoid contact with the eyes and mouth.

How to Use Diclofenac More Safely

• Use diclofenac only for the condition and duration advised by a healthcare professional.
• Tell your doctor or pharmacist about all medicines, vitamins, and supplements you take.
• Do not combine diclofenac with ibuprofen, naproxen, or other NSAIDs unless a clinician tells you to do so.
• Take oral tablets with food or milk if advised, but follow the product leaflet and your prescription instructions.
• Use topical gel only on intact skin and follow the stated amount and frequency.
• Seek urgent medical help for chest pain, shortness of breath, black stools, vomiting blood, facial swelling, or a severe allergic reaction.

Frequently Asked Questions

Is Voltarol gel safer than tablets?

Topical diclofenac generally leads to lower bloodstream exposure than oral diclofenac, so it may have fewer systemic side effects. However, it is not completely risk-free and should still be used according to the label and professional advice.

Can I use Voltarol gel and tablets together?

Do not combine them without advice from a doctor or pharmacist. Both contain diclofenac, and using them together may raise the total NSAID exposure and side-effect risk.

Which is better for knee osteoarthritis?

A topical NSAID is commonly recommended as an initial medicine option for knee osteoarthritis because it can relieve local pain with lower systemic exposure. The best choice still depends on your symptoms, skin condition, other medicines, and medical history.

How long does Voltarol gel take to work?

Response varies by condition and product. Some people notice relief after early applications, while others need regular use for several days. Follow the product directions and speak with a clinician if pain persists or worsens.

Who should avoid diclofenac?

People with an NSAID allergy, active or previous stomach ulcer or bleeding, serious heart disease, uncontrolled high blood pressure, significant kidney or liver disease, or certain asthma reactions may need to avoid diclofenac. It is also generally avoided in the last trimester of pregnancy. Ask a healthcare professional for individual advice.

Trusted Medical Sources

• DailyMed: Diclofenac prescribing information and safety warnings
• NICE: Osteoarthritis in over 16s—diagnosis and management
• NHS: Diclofenac medicine information

This page provides general educational information and does not replace medical advice, diagnosis, or treatment. A qualified healthcare professional should assess persistent, severe, unexplained, or recurrent pain.