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Corticosteroids, oftenÂ known as steroids, are an anti-inflammatory medicine prescribed for a wide range of conditions.
They're a man-made version of hormones normally produced byÂ the adrenal glandsÂ (two small glands that sit on top of the kidneys).
Corticosteroids are available in different forms, including:
These pagesÂ are aboutÂ steroid tablets, inhalers and injections.Â Steroid lotions, creams and gelsÂ are covered separately.
Corticosteroids are mainlyÂ used to reduce inflammation and suppress the immune system.
They are used to treat conditions such as:
Corticosteroids can also be used toÂ replace certain hormones that are not being produced by the body naturallyÂ â€“ for example,Â in people with Addison's disease.
Corticosteroids will only be prescribed if the potential benefits of treatment outweigh the risks. They will also be prescribed at the lowest effective dose for the shortest possible time.
There aren't usually any severe side effects if you take steroid injections, a steroid inhaler, or a short course of steroid tablets. However, prolonged treatment at high dosesÂ â€“ particularly with steroid tablets â€“ can cause problems in some people.
Potential side effects of long-term treatment include:
If you have troublesome side effects after taking corticosteroids, don't stop taking your medication until your doctor says it's safe to do so, because of the possibility of these unpleasant withdrawal effects.
Your dose may need to be reduced slowly over a few weeks or months, and you may have to have tests to ensure that your adrenal glands are still working properly before stopping corticosteroids altogether, if you have been taking them for a long time.
Read more about the side effects of corticosteroids.
For most people,Â including pregnant or breastfeeding women, steroid inhalers and injections are safe. However,Â they will still only be used if a doctor thinks the potential benefits outweigh the risks.
As steroid tablets are more likely to cause side effects, there are some circumstances when they shouldn't be used or should only be used with caution. These circumstances include:
Corticosteroids can often be taken while you’re pregnant or breastfeeding, although your doctor will only prescribe them if the risks of not being treated outweigh the risks associated with the medication.
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