Diclofenac gel
Pain and inflammationAlso known as Voltaren
Diclofenac gel is an NSAID you rub directly onto a sore joint — like a knee or hand — instead of swallowing a pill. Because it works at the skin, far less of it reaches your bloodstream, so it's often a smart choice when NSAID pills are too rough on your body. It's still in the NSAID family, though, so don't casually add NSAID pills on top of it without asking your doctor or pharmacist.
How to take it
When
Applied to the sore joint on a regular schedule — follow the label or your doctor's directions. It can take days to feel the full effect.
Food
It goes on your skin, so food doesn't matter here.
Avoid
Don't apply it to broken, infected, or irritated skin, and keep it away from your eyes and mouth. Don't add NSAID pills without asking first.
Good to know
Wash your hands after applying (unless you're treating your hands — then wait a while first), and don't cover the area with heat or tight bandages unless told to.
Missed a dose?
If you miss an application, just put it on when you remember, unless it's nearly time for the next one. Never double up to make up for it.
Common side effects
- Dryness, redness, or itching where you apply it
- Mild rash at the application site
- Peeling or irritated skin
Call a doctor if
- Black, tarry stools or vomit like coffee grounds — even topical NSAIDs carry a small bleeding risk. Get help now.
- Chest pain, trouble breathing, sudden weakness, or slurred speech — call emergency services.
- Hives, swelling of the face or throat, or wheezing after applying — serious allergic reaction. Call emergency services.
- A worsening skin reaction — blistering, oozing, or spreading rash — stop using it and call your doctor.