The NHS has issued a warning to anyone taking levothyroxine to treat their thyroid condition.
With millions of prescriptions of levothyroxine being handed out globally, the drug is one of the most commonly prescribed medicines from the NHS.
Levothyroxine is commonly used to treat an underactive thyroid gland, medically known as hypothyroidism.
Typically, it will be prescribed as either a tablet or a liquid that the patient swallows, depending on what the general physician thinks is more suitable.
While levothyroxine can be effective at treating an underactive thyroid in most cases, the NHS has warned that there are some people who should not be prescribed it.
This can be due to multiple reasons, including the drug increasing the risk of complications of other health conditions that an individual might have.
The NHS website states: "Levothyroxine can be taken by most adults and children. However, it’s not suitable for some people."
According to their guidelines, you may not be able to take levothyroxine if one of the following applies: