Product introduction
Thyronorm 37.5 mcg contains thyroxine, also known as levothyroxine, a man-made version of the main hormone produced by the thyroid gland. It is prescribed to people whose thyroid does not make enough hormone. This is a low strength, often used when starting treatment or for fine dose adjustment under a doctor's guidance.
Storage: Store below 30 degrees C. Keep out of reach of children.
Uses of Thyronorm 37.5mcg Tablet
- Hypothyroidism (underactive thyroid).
Benefits of Thyronorm 37.5mcg Tablet
By replacing the missing hormone, it helps restore normal metabolism and relieves symptoms such as tiredness, weight gain, feeling cold and low mood. Regular use at the right dose keeps thyroid blood tests within the target range.
Side effects of Thyronorm 37.5mcg Tablet
Most side effects do not require medical attention and go away as your body adjusts. Consult your doctor if they persist.
- Palpitations or a fast heartbeat.
- Anxiety or restlessness.
- Tremors.
- Weight loss.
- Increased appetite.
- Diarrhoea or vomiting.
- Sweating and heat intolerance.
- Sleeplessness.
- Headache.
How to use Thyronorm 37.5mcg Tablet
Swallow the tablet whole with water, once a day, on an empty stomach, ideally before the first meal of the morning. Avoid food, milk or tea for an hour before and two hours after the dose, and keep at least four hours between it and antacids, calcium, iron or multivitamins. Your dose is set from blood tests, so do not change it or switch brands without your doctor's advice.
How Thyronorm 37.5mcg Tablet works
Thyroxine is a synthetic thyroid hormone. It supplements the hormone your thyroid cannot produce in sufficient amounts, which helps the body regulate energy use, temperature and metabolism.
Substitutes for Thyronorm 37.5mcg Tablet
No other medicine with the same composition is listed in our catalogue yet. Message us on WhatsApp and our pharmacist will help you find a suitable alternative.
Safety advice
Safety with alcohol is not established, so check with your doctor.
It is generally considered safe when prescribed. Tell your doctor early in pregnancy, as the dose often needs adjusting.
Only insignificant amounts pass into breast milk, so it is considered acceptable when prescribed.
It does not usually affect the ability to drive.
It is probably safe in kidney disease, and a dose change may not be required.
Data in liver disease are limited, so discuss it with your doctor first.
Quick tips
- Take it at the same time every day on an empty stomach for steady hormone levels.
- Treatment is usually long term, so do not stop it even when you feel well unless your doctor says so.
- Full benefit can take six to eight weeks, and thyroid blood tests guide any change in dose.
- Space this medicine away from calcium, iron and antacids by at least four hours.
- Report chest pain, a racing heartbeat or marked anxiety to your doctor promptly.
Fact box
| Chemical class | Phenylalanine derivative |
|---|---|
| Habit forming | No |
| Therapeutic class | Hormones |
| Action class | Thyroid hormones |
Frequently asked questions
What is Thyronorm 37.5 mcg used for?
It is used to treat hypothyroidism by replacing the thyroid hormone your body is not making enough of.
How long will I need to take it?
Usually for the long term and often for life. Stopping suddenly can bring the symptoms back.
Why must it be taken on an empty stomach?
Food, milk, tea and some supplements can reduce how much of the hormone is absorbed, so take it before breakfast and wait before eating.
What happens if I take too much?
An excess can cause nervousness, a rapid heartbeat, tremors, sweating and weight loss. Contact a doctor right away.
Can I switch to another brand of thyroxine?
Only after speaking with your doctor, since a change of brand may need a repeat thyroid test.