DiclofenacOver the counter
Pronounced dye-KLOE-fen-ak
Brand names: Voltaren, Cataflam
Type: NSAID pain reliever · All Pain Relief & Fever Medicines
What Diclofenac is used for
- Arthritis and joint pain
- Muscle and back pain
- Migraine (certain forms)
- Eye inflammation after surgery (drops)
◆ Kidney note
Can reduce kidney blood flow and cause kidney injury; the gel form has much lower whole-body exposure.
Common side effects
- Stomach upset
- Headache
- Dizziness
- Skin irritation (gel)
Important cautions
- Carries a heart attack and stroke risk warning like other NSAIDs, and can cause stomach bleeding
- Should not be used for pain around the time of heart bypass surgery
How it comes
Tablets, gel, patches, eye drops, injection (hospital). This guide lists forms only — it never lists strengths or doses.
Toxicity lists: Diclofenac also appears on Medicines That Can Harm the Kidneys.
Related medicines — Pain Relief & Fever Medicines
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.