Aceclofenac: Uses, Side Effects & Safety

What it is and what it's used for

Aceclofenac is a non-steroidal anti-inflammatory drug (NSAID) — a medicine that reduces pain and swelling. It is used for pain and inflammation linked to conditions such as osteoarthritis, rheumatoid arthritis, and ankylosing spondylitis, as well as for back pain, muscle pain, toothache, and other short-term pain in muscles and joints.

In India, aceclofenac is a prescription medicine (Schedule H). It should only be taken on a doctor's advice, and it is not meant for long-term use unless your doctor has specifically advised it.

How it works (simple language)

Pain and swelling in the body are partly driven by chemicals called prostaglandins, which are made at the site of injury or inflammation. Aceclofenac is thought to work by blocking the enzymes that produce these chemicals, which lowers inflammation and eases pain. It treats the symptoms — it does not cure the underlying condition causing the pain.

Dosage forms available in India (general info only)

Aceclofenac is commonly available in India as 100 mg tablets and 200 mg sustained-release (SR) tablets that release the medicine slowly over the day. It is also sold in fixed combinations, most commonly with paracetamol, and sometimes with serratiopeptidase. Well-known Indian brand names include Zerodol and Hifenac, though brands vary.

Never decide the dose yourself from this article. Always follow your doctor's prescription or the directions on the pack, and check with your pharmacist if you are unsure — especially for children, where the dose depends on the child's weight and age.

Side effects

Common: Stomach pain, acidity or heartburn, nausea, vomiting, diarrhoea or constipation, dizziness, headache, and a feeling of tiredness.

Serious — seek medical care: Vomiting blood or black, tarry stools (signs of stomach bleeding), severe stomach pain, swelling of the face, lips or tongue, difficulty breathing or wheezing, skin rash or peeling, very little or no urine, swelling of the legs, or chest pain. Stop the medicine and seek urgent medical help if any of these occur.

Precautions and warnings

• Do not take if you have had stomach ulcers or bleeding: NSAIDs like aceclofenac can irritate the stomach lining and increase the risk of ulcers and bleeding.
• Kidney, liver, or heart disease: Tell your doctor if you have any of these, as aceclofenac can worsen them, especially with long-term use or in older adults.
• Asthma or allergy to painkillers: People who are allergic to aspirin or other NSAIDs, or who have asthma, may react badly to aceclofenac.
• Avoid alcohol: Drinking alcohol while taking aceclofenac raises the risk of stomach bleeding and dizziness.
• Blood pressure and fluid retention: Aceclofenac can raise blood pressure and cause fluid retention, so people with high blood pressure or heart failure need extra care.
• Do not combine with other painkillers casually: Taking it together with other NSAIDs or high-dose aspirin increases side-effect risk without extra benefit.
• Elderly patients: Older adults are more prone to stomach, kidney, and heart side effects and should use the lowest effective dose for the shortest time.

Interactions (general)

Aceclofenac can interact with blood thinners (such as warfarin), blood pressure medicines (ACE inhibitors, ARBs, and water pills/diuretics), methotrexate, lithium, and some diabetes medicines. Taking it with steroids or other NSAIDs raises the risk of stomach bleeding. Alcohol should be avoided. Always tell your doctor about ALL medicines you take, including herbal and ayurvedic products, before starting aceclofenac.

Pregnancy and breastfeeding (general guidance)

Aceclofenac should be avoided during pregnancy, especially in the last three months, as it may harm the unborn baby and affect labour. It is generally not recommended while breastfeeding either, as small amounts may pass into breast milk. Always consult your doctor first if you are pregnant, planning pregnancy, or breastfeeding.

Storage

Store aceclofenac tablets at room temperature, away from heat and moisture, and out of the reach of children. Do not use tablets past their expiry date, and do not share your medicine with others even if their symptoms seem similar.

When to see a doctor

See a doctor if: your pain does not improve or gets worse, you develop stomach pain, black stools, vomiting blood, swelling, rash, or breathing difficulty, or you need painkillers for more than a few days. Seek emergency care immediately for signs of stomach bleeding, severe allergic reaction, chest pain, or sudden weakness or slurred speech.

FAQs

1. Is aceclofenac stronger than paracetamol?

Aceclofenac and paracetamol work differently: aceclofenac also reduces inflammation, which makes it useful for joint and muscle pain with swelling, while paracetamol mainly relieves pain and fever. Neither is "better" in general — the right choice depends on your condition, so follow your doctor's advice.

2. Can I take aceclofenac on an empty stomach?

It is usually advised to take aceclofenac with food or milk to reduce stomach irritation. Taking it on an empty stomach increases the chance of acidity and stomach pain, so follow the directions on your prescription.

3. Can I take aceclofenac every day for joint pain?

Daily, long-term use is only advisable if your doctor has prescribed it that way, because prolonged NSAID use raises the risk of stomach, kidney, and heart problems. Your doctor will weigh the benefits against these risks and may suggest regular check-ups.

4. Is aceclofenac safe for people with high blood pressure?

Aceclofenac can raise blood pressure and cause fluid retention, so people with high blood pressure should use it only under medical supervision, with their blood pressure monitored. Tell your doctor about your blood pressure history before starting it.