How does diclofenac work?
Diclofenac blocks enzymes called COX-1 and COX-2, which produce prostaglandins—chemicals that cause pain and inflammation in the body. By reducing prostaglandins, diclofenac helps relieve pain and swelling.
What is diclofenac used to treat?
Diclofenac is commonly prescribed for:
- Arthritis (osteoarthritis and rheumatoid arthritis)
- Back pain and muscle pain
- Joint pain and swelling
- Injuries such as sprains and strains
- Period pain
- Migraine relief (in some cases)
Who can take diclofenac?
Diclofenac is suitable for most adults and children over 14 years old for short-term pain relief.
Who might not be able to take diclofenac?
Diclofenac may not be suitable if you:
- Have a history of stomach ulcers or bleeding
- Have heart disease or high blood pressure
- Have severe kidney or liver disease
- Have asthma that worsens with NSAIDs
- Are pregnant or trying to conceive
Can I take diclofenac if I’m pregnant or breastfeeding?
Diclofenac isn’t usually recommended during pregnancy, especially in the third trimester. If you are breastfeeding, consult your doctor before using it.
What if I miss a dose?
If you forget a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed one—do not take two doses at once.
How effective is diclofenac?
Diclofenac is highly effective at reducing pain and inflammation, typically working within 30 to 60 minutes.
What should I do if I take too much?
Taking too much diclofenac can cause stomach pain, nausea, vomiting, or bleeding. If you think you’ve taken too much, seek medical help immediately.
What dose of diclofenac is usually taken?
- For pain relief: 50mg to 100mg daily, divided into doses
- For arthritis: 75mg to 150mg daily
- For period pain: 50mg three times daily as needed
Your doctor will determine the correct dose based on your condition.
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What are the side effects of diclofenac?
Common side effects include:
- Stomach pain or indigestion
- Nausea
- Headaches
- Diarrhoea
Serious side effects, such as stomach ulcers, severe allergic reactions, or kidney problems, require urgent medical attention.
How should I take diclofenac?
Diclofenac is available as tablets, capsules, gels, and suppositories. Tablets and capsules should be swallowed whole with water and food to reduce stomach irritation.
When should diclofenac be taken?
Diclofenac should be taken with food or after a meal to reduce the risk of stomach upset.
What are the brand names for diclofenac?
Diclofenac is available as a generic medicine, but some branded versions include:
- Voltarol
- Diclomax
- Fenac
Final thoughts
Diclofenac is an effective pain reliever and anti-inflammatory medication, but it should be taken exactly as prescribed to avoid serious side effects. If you experience stomach pain, unusual bruising, or other concerning symptoms, speak to your doctor or pharmacist.
