Liothyronine is used to treat abnormally low activity of the thyroid gland. It helps to replace or to add on to the natural thyroid hormones in the body when the body does not produce enough natural hormones.
This medicine may also be used to treat other medical conditions as decided by your doctor.
Take Liothyronine exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.
This medicine may be taken with or without food. Try to take it at the same time each day.
Liothyronine must be taken regularly for it to be effective. Continue to take it even when you feel better. Do not stop taking Liothyronine unless instructed by the doctor.
Take the missed dose as soon as you remember. If it is time for your next dose, skip the missed dose and return to your normal dosing schedule.
DO NOT double dose under any circumstances.
If you often forget to take your medicine, let your doctor and pharmacist know.
Alert your doctor if you have:
- an overactive thyroid
- heart disease e.g. chest pain, recent heart attack
- adrenal glands disorder
as this medicine may not be suitable for you.
Inform your doctor if you have diabetes.
Let your doctor know if you are pregnant or breastfeeding.
Do not switch brands unless instructed by your doctor. This is because different brands of Liothyronine may have slightly different ways of working in your body.
Keep your appointments with your doctor. Your doctor needs to monitor your thyroid hormone levels, blood pressure, heart rate, and kidney function to check your body’s response to the medicine.
Liothyronine may cause any of the following side effects: headache, diarrhoea, vomiting, weight loss, muscle weakness, anxiety, problems falling asleep and fever.
Some side effects may need immediate medical help. Alert your doctor quickly if you experience chest pain, fast or irregular heartbeat, breathlessness, excessive sweating, inability to tolerate heat, increased anxiety, agitation or lethargy.
Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Inform your doctor and pharmacists if you are taking any of these medicines:
- medicines for epilepsy (seizures or fits) e.g. phenytoin, carbamazepine
- medicines for diabetes e.g. insulin, metformin, gliclazide
- cholesterol-lowering medicines e.g. cholestyramine, colestipol
- medicines for heart disease e.g. digoxin, amiodarone
- medicines for asthma e.g. theophylline
- medicines for depression e.g. amitriptyline, imipramine
- blood-thinning medicines e.g. warfarin
This list does not include all medicines that may interact with Liothyronine.
Inform your doctor if you are currently taking birth control pills as this can reduce the effectiveness of Liothyronine. You should not stop or start any birth control pills without first informing your doctor. Ask your doctor about using non-hormonal birth control as an alternative while being treated with this medicine.
Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics, such as traditional Chinese medicines, supplements and medicines you buy without a prescription.
Store in a cool, dry place away from the reach of children.
Medicines must not be used past the expiry date.