Care365.caYour health is one click away
Menu

Medication guide

Diclofenac Gel

Relieves localized muscle or joint-injury pain; indications and limits depend on the exact product.

Check the name, strength and form on your own prescription or package.

Brand
Voltaren
Form
Topical NSAID gel
Guidance checked
2026-09-08

About this medication

  • This gel helps relieve pain from a recent muscle or joint injury, such as a sprain, strain, or sports injury, like a twisted ankle or a strained back or shoulder.
  • It works at the site where you rub it in, and it is meant to be used alongside rest, not as a cure on its own.
  • This medicine is for adults. It is not approved for children or teens.

Relieves localized muscle or joint-injury pain; indications and limits depend on the exact product.

How to use it

  • Squeeze the gel from the tube and measure it using the dosing card or dosing ring that came with the product.
  • Gently rub the gel into the skin over the sore area until it is absorbed.
  • Wash your hands with soap and water after applying, unless your hands are the area being treated.
  • Wait until the gel has dried before showering, bathing, or covering the area with an airtight bandage; a loose, breathable bandage is fine.
  • Follow the schedule and amount on your product label or the Care365 care team's instructions, and do not use more than directed or for longer than your doctor recommends.

If you miss a dose

  • If you forget an application, apply the gel as soon as you remember, then continue with your regular schedule.
  • Do not apply extra gel to make up for a missed application.

Follow the gel-strength-specific label. The referenced extra-strength product is applied twice daily; seek advice if needed beyond seven days.

Pregnancy and breastfeeding

  • Do not use this gel during the last stage of pregnancy.
  • If you are pregnant, trying to become pregnant, or earlier in pregnancy, talk to your doctor first; if it is needed, the smallest amount for the shortest time is recommended.
  • If you are breastfeeding, talk to your doctor before using this gel, and do not apply it to your breast area.

Avoid in pregnancy, especially the third trimester; breastfeeding requires advice and no breast application.

Before you use it

  • Tell your healthcare professional if you are allergic to diclofenac, aspirin, or any other anti-inflammatory pain medicine, or if aspirin-type medicines have ever triggered asthma, swelling, or hives for you.
  • Tell your healthcare professional if you use any other product with diclofenac, or any anti-inflammatory pill such as ibuprofen or naproxen.
  • Tell your healthcare professional if you have a stomach ulcer, or have recently had heart bypass surgery.
  • Tell your doctor if you are pregnant, might become pregnant, or are breastfeeding.

Important warnings

  • Do not use this gel during the last stage of pregnancy, as it can affect the baby, or after heart bypass surgery.
  • This gel is for your skin only. Never swallow it, and keep it away from your eyes, mouth, nose, and other moist body surfaces.
  • Stop using this gel and tell your healthcare professional if you get a skin rash, blistering, or a reaction where your skin becomes very sensitive to sunlight.
  • Very little of this medicine enters your bloodstream, but using it over a large area or for too long raises the chance of whole-body side effects like those from anti-inflammatory pills, including stomach bleeding, liver or kidney problems, and heart problems.
  • This gel contains an ingredient that can build up on clothing or bedding and make it easier to catch fire. Be careful near open flames or while smoking, and wash fabric that touches the gel.

Avoid NSAID allergy, broken skin and combining with oral NSAIDs or other diclofenac. Not after bypass surgery.

Possible side effects

  • Mild pain, itching, or redness where you applied the gel can happen.
  • A skin rash or irritation at the application site can happen.

Application-site irritation, itching or rash.

When to get help

When to get emergency help

  • Get emergency help for signs of a severe allergic reaction: swelling of the face, lips, tongue, or throat; hives; or trouble breathing or swallowing.
  • Get emergency help for chest pain or severe shortness of breath.
  • Get emergency help for a severe skin reaction with blistering or peeling skin.
  • Get emergency help for yellowing of the skin or eyes, dark urine, or unusual bruising or bleeding.

When to contact a healthcare professional

  • Contact your doctor if the pain does not improve, or gets worse, after about a week of use.
  • Contact your doctor if you develop a new rash, itching, or unusual sensitivity to sunlight on the treated skin.
  • Contact the Care365 care team if you are unsure whether this gel is safe with your other medicines.

Get help for bleeding, breathing difficulty, swelling or blistering skin.

Other medicines and products

  • Tell the Care365 care team about all the medicines you take, especially blood thinners such as warfarin, other anti-inflammatory medicines, and blood pressure medicines, since combining them with this gel has rarely been linked to bleeding or other problems.
  • Do not use this gel with other diclofenac products or anti-inflammatory pain pills unless your doctor says it is safe.
  • No specific food or alcohol restrictions are known for this gel, since very little of it enters your bloodstream.

Review anticoagulants and other pain medicines.

Missed doses, storage and accidental exposure

  • Store this gel at room temperature, out of the sight and reach of children and pets.
  • Accidental contact with a child's eyes or mouth can cause irritation.
  • Ask the Care365 care team how to safely dispose of any unused or expired gel.

Follow your own product’s missed-dose instructions. If you are unsure, ask the Care365 clinical team before taking an extra dose. Contraceptives, injections and modified-release medicines may need a specific plan.

Keep the original packaging and follow its storage, expiry and disposal instructions. Keep medicines away from children and pets. Ask about refrigeration, after-opening limits and safe sharps disposal when relevant.

For suspected overdose or accidental swallowing, contact poison control or urgent medical care promptly. Call emergency services for breathing difficulty, collapse or a seizure.

Key points to remember

  • Use this gel only on the skin, never by mouth or near your eyes.
  • Wash your hands after applying, and let the gel dry before covering the area or bathing.
  • See your doctor if your injury does not improve within about a week.
  • Keep track of how much you are using so you do not go over the recommended daily amount.

These practical points come from the Pharmasist patient handout for the same product monograph cited by this guide.

References and product information

Sources checked .

Sources checked 2026-09-08. Safety sections are highlights; consult the full product information for complete warnings and instructions.

Check the Canadian Drug Product Database by product name or DIN for current product information.

This is a plain-language guide, not the complete monograph. Match the name, strength and form on your package before using product-specific directions.

← Browse all medication guides

Explore care options