Levothyroxine

Hypothyroidism is a condition where the thyroid gland in the body does not make enough thyroid hormones. People who have low thyroid levels may suffer from weight gain and feel cold or tired all the time. Levothyroxine works like the thyroid hormone in the body.

What is this medication used for

Hypothyroidism is a condition where the thyroid gland in the body does not make enough thyroid hormones. People who have low thyroid levels may suffer from weight gain and feel cold or tired all the time. Levothyroxine works like the thyroid hormone in the body.

Dosage and How to Use

  • Take your medicine in the morning, half to one hour before food.

  • You should take the following items 2 to 4 hours before or after levothyroxine as taking them together might decrease the absorption of levothyroxine into your body.

    • Milk or dairy products

    • Indigestion medicines such as antacids

    • Medicines that have iron, zinc, calcium or aluminium

  • Do not stop taking your medicines without checking with your doctors.

  • If you miss a dose, take the missed dose as soon as you remember. If it is almost time for your next dose, take only the usual dose. Do not double your dose or use extra medicine to make up for the missed dose.

Side Effects, Precautions, Contraindication

What are the possible side effects of the medicine?

Side effects of levothyroxine include headache, flushing, sweating, weight loss, diarrhoea and difficulty sleeping. Inform your doctor if you experience these side effects, so that your doctor can adjust your medicine.

Some serious side effects include:

  • Fever

  • Fast and/or irregular heartbeat

  • Low blood pressure

If you notice any of the above side effects or do not feel well after taking the medicines, please inform your doctor immediately.

How do I know if I am allergic to this medicine?

The symptoms of a drug allergy include one or more of the following:

  • Swollen face/eyes/lips

  • Difficulty in breathing

  • Itchy skin rashes over your whole body

If you experience any of these symptoms, you should stop your medicine immediately and see your doctor.

What precautions should I follow when taking the medicine?

Inform your doctor or pharmacist if you have:

  • High blood pressure

  • Heart problems such as angina or coronary heart disease

There are some medicines that may affect the level of levothyroxine in your body. Please inform your doctor or pharmacist before taking other medicines, vitamins, herbal products and other traditional medicines.

Handling and Storage

  • Keep your medicines in the original container or packaging, tightly closed or sealed in a cool and dry place, away from direct sunlight.

  • Keep the medicine out of reach of children.

  • Throw away all expired medicines.

This article answers some common questions about this medicine. It does not contain all the available information. It also does not take the place of talking to your doctor or pharmacist.

PH006-028-E-1216-V1

MORE A-Z

Insulin Lispro

Insulin Lispro is a rapid acting insulin. It is used to reduce high blood sugar levels after a meal in patients with diabetes mellitus.

Pharmaceutical Society of Singapore
X

Share on Facebook now for
Healthpoints

Glipizide

Glipizide is used to manage diabetes. It helps the pancreas to release more insulin to bring your blood sugar levels down.

Pharmaceutical Society of Singapore
X

Share on Facebook now for
Healthpoints

Glibenclamide

Glibenclamide is used to manage diabetes. It helps the pancreas to release more insulin to bring your blood sugar levels down.

Pharmaceutical Society of Singapore
X

Share on Facebook now for
Healthpoints

More A-Z

126
Levothyroxine

 Catalog-Item Reuse

Back to Top