Prescription Only Medication (POM)
Levothyroxine is a medicine used to treat an under active thyroid gland (hypothyroidism).
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Levothyroxine is a synthetic version of the thyroid hormone thyroxine (T4). The medication is taken to help treat an underactive thyroid gland, also known as hypothyroidism. Levothyroxine was first created in 1927 and is now one of the most widely used medications worldwide. It is also listed as an essential medicine by the World Health Organisation.
Levothyroxine should be taken once a day, preferably in the morning shortly after waking up. You should take it on an empty stomach and before consuming any caffeine, as it can stop the medication working properly. The instructions will also be on the patient information leaflet, which can be found inside the packaging of the medication and online.
Any medication can cause side effects, especially if you take more than the instructed dose. If you experience side effects from Levothyroxine tablets they should go away shortly after, but if they persist for longer than 24 hours you should contact your healthcare provider.
The common side effects of Levothyroxine are:
Although it’s rare, some can have serious side effects to Levothyroxine or even be allergic. In this case you should contact the emergency services as soon as possible.
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