Liothyronine
Liothyronine 20mcg and 25mcg tablets, a synthetic form of the thyroid hormone T3 used for hypothyroidism (underactive thyroid). Packs contain 100 tablets.
All strengths and pack prices
| Strength | Pack | Price | Per tablet |
|---|---|---|---|
| 20mcg | 100 tablets | $94.00 | $0.94 |
| 25mcg | 100 tablets | $78.00 | $0.78 |
- Category
- Thyroid Health
- Active ingredient
- Liothyronine
- Route
- Oral
- Form
- Tablet
- Strengths
- 20/25mcg
You will receive a quality generic, depending on stock.
Shipped in a discreet, unmarked envelope.
Details
- Conditions
- Hypothyroidism
- Therapeutic Class
- Thyroid hormone
- Pharmacological Class
- Synthetic T3
- Minor Side Effects
- Increased sweating, Sensitivity to heat, Weight loss
- Moderate Side Effects
- Palpitations, Anxiety, Tremor
- Dosage Forms
- Tablet
- Administration Route
- Oral
- Originator
- Pfizer
- Onset Time
- Hours
- Duration
- 24 hours
- Storage Instructions
- Store at room temperature away from light.
- Drug Interactions
- Anticoagulants, Digoxin
What you will receive
Liothyronine is a generic medicine sold under the name of its active ingredient, Liothyronine.
- The manufacturer depends on what is in stock when your order ships.
- It contains the same active ingredient, at the same strength, as the brand-name versions.
FAQ
What strengths and pack sizes of Liothyronine can I order?
Liothyronine tablets come in 20mcg and 25mcg strengths. Each pack contains 100 tablets for both strengths.
How is Liothyronine delivered to Hong Kong?
For Liothyronine, tracked courier takes 5 to 9 business days and includes online tracking. Standard airmail takes 14 to 21 business days, 30 at most, and is untracked. Every order ships in plain, unbranded packaging with nothing outside about the contents.
What are the other names for liothyronine?
A brand name for liothyronine is Tertroxin. Liothyronine tablets are a pure generic liothyronine product and are not that brand.
How long does liothyronine take to work?
Liothyronine is already the active thyroid hormone T3, so it starts to work within a day. Tiredness, cold intolerance and other low-thyroid symptoms usually improve over days to a few weeks as the daily amount is adjusted.
Is liothyronine the same as levothyroxine?
No. Levothyroxine is T4, a storage hormone that the body converts into T3. Liothyronine is T3 itself, the active form, so it acts more quickly and clears from the body more quickly. They are different ingredients.
Can I take liothyronine with calcium or iron tablets?
Not at the same time. Calcium and iron bind liothyronine in the gut and lower the amount absorbed. A simple routine is liothyronine in the morning and the supplement at least four hours later, or the supplement in the evening.
What happens if I miss a dose of liothyronine?
Take the missed dose later the same day. If you do not remember until the next day, skip the missed dose and take your usual one. Taking two doses together can push your thyroid hormone level too high.
Does liothyronine cause weight loss?
It can, if the dose is too high. Thyroid hormone speeds up metabolism, and extra liothyronine may lead to unwanted weight loss along with shakiness or a fast heartbeat. Weight usually settles once the daily amount is right.
About Liothyronine
What liothyronine is for
Liothyronine is a man-made version of triiodothyronine (T3), one of the two hormones your thyroid gland normally makes. When the thyroid is underactive (hypothyroidism), the body does not make enough hormone and many functions slow down. Liothyronine replaces T3 directly, so the body does not have to convert it from another hormone first. It is used to bring thyroid hormone levels back towards normal.
Strengths and how to take it
The tablets come in 20mcg and 25mcg strengths, both in packs of 100. The two sizes let a daily amount be adjusted in small steps without cutting tablets. If you already know which strength you use, choose that one. Liothyronine is usually taken once a day, in the morning before breakfast. Keeping to the same time each day helps keep the amount in your body steady. Tablets can be swallowed with water.
Side effects
When the amount is right, side effects are uncommon. If it is too high, you may feel shaky or nervous, notice a pounding or fast heartbeat, sweat more, dislike heat, lose weight without trying, or have diarrhoea. These signs mean the hormone level may be too high. Chest pain or a very fast, irregular heartbeat needs urgent treatment. A rash together with swelling of the face, lips or throat, or trouble breathing, points to an allergy to the tablets and needs urgent help.
What interacts with liothyronine
Calcium and iron supplements reduce how much liothyronine is absorbed. Take them at least four hours apart from your liothyronine dose. Liothyronine can also increase the effect of warfarin and similar blood-thinning medicines, which may show up as easy bruising or bleeding.
Keeping the tablets
Keep the tablets in their original pack, dry and out of direct sunlight. Heat and damp can weaken them. Do not use them after the expiry date.
Sources
- Liothyronine: MedlinePlus Drug Information — National Library of Medicine
- Hypothyroidism (Underactive Thyroid) - NIDDK — National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)