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Diclofenac and menthol topical

Generic name: diclofenac and menthol topical [ dye-KLOE-fen-ak-and-MEN-thol-TOP-i-kal ]
Brand name: DicloStream
Dosage form: topical liquid (1.5%-10%)
Drug class: Topical non-steroidal anti-inflammatories

Medically reviewed by on Oct 18, 2023. Written by Cerner Multum.

What is diclofenac and menthol topical?

Diclofenac is a nonsteroidal anti-inflammatory drug (NSAID). Menthol provides a cooling sensation when applied to the skin.

Diclofenac and menthol topical (for the skin) is a combination medicine used to treat osteoarthritis of the knee.

Diclofenac and menthol topical may also be used for purposes not listed in this medication guide.

Diclofenac and menthol topical side effects

Get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).

Stop using diclofenac and menthol topical and seek emergency medical attention if you have signs of a heart attack or stroke: chest pain spreading to your jaw or shoulder, sudden numbness or weakness on one side of the body, slurred speech, feeling short of breath.

Also call your doctor at once if you have:

Serious side effects may be more likely in older adults.

Common side effects of diclofenac and menthol topical may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


Diclofenac and menthol can increase your risk of fatal heart attack or stroke. Do not use this medicine just before or after heart bypass surgery (coronary artery bypass graft, or CABG). Diclofenac and menthol may also cause stomach or intestinal bleeding, which can be fatal.

Before taking this medicine

You should not use diclofenac and menthol topical if you are allergic to menthol or diclofenac (Voltaren, Cataflam, Flector, and others), or if you have ever had an asthma attack or severe allergic reaction after taking aspirin or an NSAID.

Tell your doctor if you have ever had:

Diclofenac can affect ovulation and it may be harder to get pregnant while you are using this medicine.

If you are pregnant, you should not use diclofenac and menthol topical unless your doctor tells you to. Using an NSAID during the last 20 weeks of pregnancy can cause serious heart or kidney problems in the unborn baby and possible complications with your pregnancy.

It may not be safe to breastfeed while using this medicine. Ask your doctor about any risk.

How should I use diclofenac and menthol topical?

Follow all directions on your prescription label and read all medication guides. Use the lowest dose that is effective in treating your condition.

Do not take by mouth. Topical medicine is for use only on the skin. Do not use on open wounds or irritated skin. Rinse with water if this medicine gets in your eyes or mouth.

Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you do not understand these instructions.

Do not apply this medicine to an open skin wound, or on areas of infection, rash, burn, or peeling skin.

After applying the medicine, wash and dry your hands. Wait until the medicine is completely dry before you cover the knee with clothing. Avoid showering/bathing the treated knee for at least 30 minutes after applying diclofenac and menthol topical.

Wait until the treated skin is completely dry before you apply sunscreen, insect repellant, lotion, or other skin products. Do not allow anyone else to touch the treated skin until it is completely dry.

Do not cover treated skin with a bandage or expose it to heat from a hot tub, heating pad, or sauna. Heat or bandaging can increase the amount of drug absorbed through your skin and may cause harmful effects.

If you use this medicine long-term, your blood pressure will need to be checked often. Your kidney and liver function may also need to be checked.

Store at room temperature away from moisture and heat. Keep the bottle tightly closed when not in use.

Diclofenac and menthol topical dosing information

Usual Adult Dose for Osteoarthritis:

40 drops topically per knee 4 times a day

-Use the lowest effective dose for the shortest duration consistent with treatment goals; application in an amount exceeding or less than the recommended dose has not been studied and is therefore, not recommended.
-To avoid spillage dispense 10 drops at a time directly onto knee or into hand then onto knee; repeat until all drops have been applied.

Use: For the treatment of signs and symptoms of osteoarthritis of the knee.

What happens if I miss a dose?

Apply the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not apply two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include drowsiness, lack of energy, nausea, vomiting, or stomach pain.

What should I avoid while using diclofenac and menthol topical?

Avoid getting diclofenac and menthol topical in your eyes. If contact does occur, rinse with water. Call your doctor if you have eye irritation that lasts longer than 1 hour.

Avoid exposing treated skin to heat, sunlight, or tanning beds.

Ask a doctor or pharmacist before using other medicines for pain, fever, swelling, or cold/flu symptoms. They may contain ingredients similar to diclofenac (such as aspirin, ibuprofen, ketoprofen, or naproxen).

Avoid drinking alcohol. It may increase your risk of liver damage.

Avoid smoking, since it can also increase your risk of stomach bleeding.

If you are also taking low-dose aspirin to prevent heart attack or stroke, do not stop taking it or change your dose without your doctor's advice. Aspirin should be used for cardiovascular conditions only under the supervision of a doctor.

What other drugs will affect diclofenac and menthol topical?

Ask your doctor before using diclofenac and menthol if you take an antidepressant. Taking certain antidepressants with an NSAID may cause you to bruise or bleed easily.

Tell your doctor about all your other medicines, especially:

This list is not complete. Other drugs may affect diclofenac and menthol, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

More about diclofenac / menthol topical

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Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.