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Side Effects of Levothyroxine sodium 100mcgs when used in thyroid problems

Information specific to: Levothyroxine sodium 100microgram tablets when used in Thyroid problems.

A medicine is only made available to the public if the clinical trials have shown that the benefits of taking the medicine outweigh the risks.

Once a medicine has been licensed, information on the medicine’s effects, both intended and unintended, is continuously recorded and updated.

Some side-effects may be serious while others may only be a mild inconvenience.

Everyone’s reaction to a medicine is different. It is difficult to predict which side-effects you will have from taking a particular medicine, or whether you will have any side-effects at all. The important thing is to tell your prescriber or pharmacist if you are having problems with your medicine.

The frequency of these side-effects is unknown

  • bone problems – these may occur in infants
  • breathing difficulties
  • chest pain
  • diarrhoea
  • difficulty sleeping
  • faster heart rate
  • feeling restless
  • feelings of excitement
  • fever
  • flushing
  • general feeling of being unwell
  • hair loss – this may occur in children
  • headaches
  • heart problems
  • hypersensitivity reactions
  • intolerance of heat
  • intracranial hypertension – this may occur in children
  • itching
  • joint pain
  • muscle cramps
  • muscle weakness
  • oedema
  • osteoporosis
  • palpitations
  • photosensitivity
  • premature epiphyseal closure – this may occur in children
  • skin rash or rashes
  • sweating
  • tremors
  • vomiting
  • weight loss
  • worsening of thyroid problems – these may occur if Levothyroxine sodium is taken at a high dose for long period of time. These may include lowered blood pressure, jaundice, confusion or coma

If you feel unwell or if you have concerns about a side-effect, you will need to seek advice. If you feel very ill, get medical help straight away. Contact your prescriber, pharmacist, nurse or call 111.

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