Levothyroxine is used to add thyroid hormones to your body.
Take levothyroxine regularly as directed with a glass of water. Take it on an empty stomach – one hour before or two hours after food.
Take the missed dose as soon as possible. If it is close to the time for your next dose, skip the missed dose and carry on as normal. Do not take two doses at the same time.
Some medicines available without a prescription may react with levothyroxine including:
Tell your pharmacist or doctor about all medicines or treatments that you may be taking including vitamins, herbal products (e.g. kelp powder) or recreational drugs. Avoid foods such as seaweed or kelp that may contain iodine.
|Side Effects||Recommended action|
Chest pain, change in heartbeat
Heat intolerance, sweating
Restlessness, irritability, nervousness, tiredness
Hair loss or thinning
Changes in periods
Diarrhoea, nausea, vomiting, weight loss
|Tell your doctor|
If you notice any other effects, discuss them with your doctor or pharmacist.
This leaflet contains important, but not all, information about this medicine.
Prepared by the PILs Committee at Christchurch Hospital, Canterbury District Health Board, New Zealand. September 2017
For more general information about this sheet and its contents, see: What does a My Medicines sheet cover?
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My Medicines Patient Information Leaflets (PILs) contain important, but not all, information about the medicines they describe.
For more information about the sheets, see: What does a My Medicines sheet cover?
My Medicines is developed by a team at the Canterbury District Health Board. Our team is made up of doctors, pharmacists, and a non-medical person to help us keep to plain language. We also discuss our information with specialist health professionals or groups when needed