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Health Centres - Voltarol tablets (diclofenac)
How does it work?Voltarol e/c tablets, Voltarol dispersible tablets, Voltarol SR tablets and Voltarol Retard tablets all contain the active ingredient diclofenac sodium, which is a type of medicine called a non-steroidal anti-inflammatory drug (NSAID). NSAIDs are used to relieve pain and inflammation. (NB. Diclofenac is also available without a brand name, ie as the generic medicine.)
Diclofenac works by blocking the action of a substance in the body called cyclo-oxygenase (COX). Cyclo-oxygenase is involved in the production of various chemicals in the body, some of which are known as prostaglandins. Prostaglandins are produced by the body in response to injury and certain diseases and conditions, and cause pain, swelling and inflammation. Diclofenac blocks the production of these prostaglandins and is therefore effective at reducing inflammation and pain.
Diclofenac is used to relieve pain and inflammation in a wide range of musculoskeletal conditions, including various forms of arthritis, gout, sprains, fractures, dislocations, back pain, tendinitis and frozen shoulder. It is also used to relieve pain and inflammation following dental, orthopaedic (bone) and other minor surgery.
Voltarol e/c tablets have a special 'enteric coating' that is designed to prevent the absorption of the diclofenac in the stomach, and thus reduce the risk of stomach irritation and indigestion. The diclofenac is absorbed when the tablet reaches the intestine. The tablets should be swallowed whole to avoid damaging this coating.
Voltarol dispersible tablets are dissolved in water before taking. The diclofenac solution is rapidly absorbed from the gut, so this type of Voltarol tablet provides pain relief more quickly than the other types of tablet. However, the solution is more likely to irritate the stomach lining, because it doesn't have the advantage of the protective enteric-coat. The dispersible tablets are therefore most suitable for short-term use. They shouldn't be used for longer than three months.
Voltarol SR tablets and Voltarol Retard tablets are sustained-release tablets. They contain higher doses of diclofenac and are designed to release this slowly and continuously over a few hours. This provides more prolonged pain relief, so these tablets are usually taken once a day. These tablets must also be swallowed whole to avoid damaging the sustained-release action.
All types of Voltarol tablet should preferably be taken with food to help avoid irritating the stomach.
What is it used for?
In adults, Voltarol tablets can be used to relieve pain and inflammation in a wide range of conditions, including those listed below.
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Rheumatoid arthritis.
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Osteoarthritis.
- A form of arthritis affecting the joints of the spine (ankylosing spondylitis).
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Acute gout.
- Acute disorders of the muscles and skeleton, such as frozen shoulder (periarthritis), tendon inflammation (tendinitis), tenosynovitis, bursitis.
- Painful conditions due to accidents, such as sprains, strains, dislocations, fractures.
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Lower back pain.
- Pain and inflammation following dental, orthopaedic (bone) and other minor surgery.
In children aged 1-12 years, Voltarol 25mg e/c tablets are used for:
- Chronic juvenile arthritis.
No other forms or strengths of Voltarol tablets are suitable for this age group.
Warning!
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- Voltarol e/c tablets, Voltarol SR tablets and Voltarol Retard tablets should be swallowed whole and not broken, crushed or chewed. They should preferably be taken with food.
- Voltarol dispersible tablets should be dispersed in a glass of water before taking. They should also be taken with or after food. This type of Voltarol tablet is more likely to cause stomach irritation than the others and should not be used for longer than three months.
- This medicine may cause dizziness, drowsiness or visual disturbances and so may affect your ability to drive or operate machinery safely. Do not drive or operate machinery until you know how this medicine affects you and you are sure it won't affect your performance.
- This medicine may mask the signs and symptoms of infection, such as fever and inflammation. This may make you think mistakenly that an infection is getting better when it isn't, or that an infection is less serious than it is. For this reason you should tell your doctor if you get an infection while you are taking this medicine.
- Your doctor will prescribe you the lowest effective dose of this medicine for the shortest possible time necessary to relieve your symptoms. This is to minimise the chances of any side effects, particularly those mentioned below. It is important not to exceed the prescribed dose.
- NSAIDs can occasionally cause serious side effects on the gut, such as ulceration, bleeding or perforation of the stomach or intestinal lining. This type of side effect is more likely to occur in elderly people and in people taking high doses of the medicine. The risk can also be increased by taking certain other medicines (see end of factsheet). It is important that these people, as well as people with a history of disorders affecting the stomach or intestines, are closely monitored by a doctor while taking this medicine. If your doctor thinks you are at high risk of side effects on the gut you may be prescribed an additional medicine to help protect your gut.