Voltaren gel is applied directly to the skin over a painful joint, rubbed in gently, and allowed to absorb before you cover the area or get it wet. The amount you use depends on which joint you’re treating: 4 grams per application for lower body joints like knees, ankles, and feet, and 2 grams per application for upper body joints like hands, wrists, and elbows. You apply it four times daily, spaced throughout the day.
How Much to Apply
The dose differs between larger and smaller joints. For a knee, ankle, or foot, use 4 grams of gel per application. For a hand, wrist, or elbow, use 2 grams. The tube comes with a dosing card marked with lines that help you measure the right amount. Squeeze the gel onto the card up to the appropriate line, then use your hand to apply it to the joint.
You apply the gel four times a day to each affected joint. That means the maximum for a single lower body joint is 16 grams per day, and for a single upper body joint, 8 grams per day. If you’re treating more than one joint, the total across all joints should not exceed 32 grams per day.
Step-by-Step Application
Squeeze the gel onto the dosing card and measure the correct amount. Apply it directly to the skin over and around the affected joint, then gently rub it in. You don’t need to massage it deeply. Just spread it evenly over the area until the skin has a thin, even coating.
After applying, avoid covering the treated area with clothing or gloves for at least 10 minutes. This gives the gel time to absorb into the skin. Don’t shower or bathe for at least one hour after application. If you’ve applied it to your hands, avoid washing them during that window as well, since you need the gel to stay in contact with the joint.
If you applied the gel to a joint other than your hands, wash your hands after rubbing it in. You want the medication on the target joint, not absorbed through your palms unnecessarily.
Where to Apply (and Where Not To)
Voltaren gel is designed for joints close to the skin’s surface: knees, ankles, feet, hands, wrists, and elbows. These are the joints where the active ingredient, diclofenac, can penetrate effectively. It’s not intended for deeper joints like hips or the spine, where layers of muscle and tissue prevent adequate absorption.
Don’t apply the gel to broken, cut, or irritated skin, and keep it away from your eyes, nose, and mouth. Avoid using it on sunburned skin or alongside heating pads, bandages, or occlusive wraps, which can increase absorption beyond what’s intended.
How It Works
The active ingredient in Voltaren gel is diclofenac, a nonsteroidal anti-inflammatory drug (NSAID) in the same family as ibuprofen and naproxen. It works by blocking the production of prostaglandins, chemicals your body releases at the site of injury or inflammation. Prostaglandins sensitize your nerves to pain and drive swelling, so reducing them at the joint decreases both.
The key advantage of the gel form is that it delivers the drug locally rather than sending it through your entire bloodstream. A clinical study comparing topical diclofenac gel to oral diclofenac tablets found that oral dosing produced 14 to 27 times more drug in the bloodstream than the gel, depending on how many joints were treated. Peak blood levels were 87 to 161 times higher with the oral form. That dramatically lower systemic exposure is the main reason topical diclofenac causes fewer stomach and cardiovascular side effects than pills.
How Long Before It Works
You may notice some relief within the first few applications, but Voltaren gel works best with consistent use over several days. Many people see meaningful improvement within the first week when applying it four times daily as directed. It’s not designed for sudden, acute pain relief the way popping an ibuprofen tablet might be. Think of it as a steady, cumulative approach: the anti-inflammatory effect builds in the tissue around the joint with regular application.
If you’ve been using it consistently for two to three weeks without improvement, the gel may not be the right fit for your type of pain.
Safety Considerations
Because systemic absorption is so much lower than oral NSAIDs, the gel carries a smaller risk of stomach irritation and kidney strain. That said, it’s still an NSAID, and prolonged use at high doses does carry a small increased risk of cardiovascular events like heart attack and stroke. This risk is most relevant if you already have high blood pressure, high cholesterol, diabetes, heart disease, or if you smoke.
Avoid using Voltaren gel at the same time as oral NSAIDs like ibuprofen or naproxen. Stacking two NSAIDs increases the chance of side effects, particularly stomach bleeding and kidney problems, without providing proportionally better pain relief. Low-dose aspirin for heart protection is generally a separate consideration, but it’s worth flagging the combination to your pharmacist.
Common local side effects include dryness, redness, or mild irritation at the application site. These are typically minor and resolve once you stop using the product. If you develop a rash, blistering, or significant itching, discontinue use.
Practical Tips for Daily Use
Four applications a day can be hard to remember. A schedule that works for most people: first thing in the morning, around lunchtime, late afternoon, and before bed. Spacing the doses roughly four to six hours apart keeps a more consistent level of the drug in the tissue around your joint.
If you’re treating your hands, the 10-minute drying window can feel inconvenient. Some people apply the gel right before a task that doesn’t require their hands, like watching TV or reading, so they’re not tempted to wash it off too soon. For knees, loose-fitting pants or shorts make the waiting period easier.
Store the tube at room temperature with the cap tightly closed. The gel can dry out if left open. Each tube contains a finite amount, and because you’re using it four times daily, you’ll go through a standard tube faster than you might expect, especially if treating a larger joint like the knee.