Diclofenac

Diclofenac is an anti-inflammatory medicine from the NSAID (non-steroidal anti-inflammatory drug) class. In day-to-day practice, it’s chosen when pain has an inflammatory component—think swollen joints, tender tendons, or a painful flare that limits movement.

One practical point patients appreciate: Diclofenac can improve function, not just pain scores, because less inflammation often means less morning stiffness and better range of motion.

Diclofenac is the active chemical compound. In medicines, it may appear as different salts that help with solubility and absorption.

Diclofenac sodium is a common oral form used to help the drug dissolve and absorb in the gastrointestinal tract. Diclofenac free acid refers to the parent molecule, which is less soluble on its own. You may also see diclofenac diethylamine mentioned for topical products, where that salt form supports delivery through the skin.

On this product page, the active ingredient is Diclofenac, supplied as tablets.

• Take Diclofenac by mouth with water, preferably after food
• Adults are commonly prescribed a total daily dose in the 50–150 mg range, divided into 2–3 doses
• Do not exceed the prescribed daily maximum
• Use the shortest duration that controls symptoms, especially if you have ulcer or cardiovascular risk factors

Do not chew or break tablets unless your prescriber instructed it, since altering a tablet can change how quickly the dose is released and can worsen stomach irritation.

If you miss a dose, take it when you remember unless it is close to the next dose; in that case, skip the missed dose and return to your schedule. Do not double the next dose.

• Oral tablets: Take Diclofenac by mouth as prescribed, usually 50 mg 2 to 3 times per day. Swallow the tablet with water after meals to reduce stomach upset.
• Extended-release tablets: Take 75 mg to 100 mg once daily by mouth, preferably with food and at the same time each day.
• Do not exceed 150 mg per day unless a clinician specifically tells you to.
• Duration: Use the lowest effective dose for the shortest possible time; short-term pain relief is often a few days to 2 weeks, while longer use should be monitored by a clinician.
• Topical forms, if prescribed: Apply Diclofenac to the affected skin area 3 to 4 times daily and wash hands after use; do not apply on broken skin.

Diclofenac is used as an analgesic and anti-inflammatory for painful conditions where inflammation is part of the problem. It is also used as an antirheumatic option in inflammatory joint disease.

Typical indications include:

• Osteoarthritis pain with stiffness and swelling
• Rheumatoid arthritis symptom control (antirheumatic use)
• Acute gout flares (short-term)
• Acute back pain with inflammatory features
• Muscle and tendon pain after strain/sprain
• Post-injury or post-procedure pain where inflammation is expected
• Primary dysmenorrhea (menstrual cramps)

Diclofenac sits within the NSAID group, alongside options like ibuprofen and naproxen, and it is often compared with COX-2–selective therapy such as celecoxib.

Clinicians often view diclofenac as “strong per dose” for inflammatory pain, while naproxen may feel steadier across the day for some people due to longer duration. Celecoxib can be preferred when GI history is a dominant concern, though cardiovascular risk assessment still matters.

Small choices change tolerability.

• Taking Diclofenac on an empty stomach when you already have reflux or gastritis
• Combining two NSAIDs (Diclofenac plus ibuprofen or naproxen) during a bad pain day
• Using it through dehydration (sports in the heat, fasting, gastroenteritis), then blaming the drug for fatigue when the kidney stress was the real issue
• Assuming “no stomach pain” means “no GI risk”; ulcers and bleeding can be silent until they aren’t
• Ignoring blood pressure readings that rise after starting an NSAID course

In clinic, doctors often use Diclofenac as a short-course tool to “calm the flare,” then step down once mobility returns. They also tend to be stricter about NSAID duration in people with hypertension, diabetes, or a prior ulcer history, because those patients are the ones who get into trouble quietly.

Pain relief can be quick.

Side effects can also be quick.