ASTERA LABS

Levothyroxine Sodium Thyroid (T4)

10.00€ 0.20€/tab

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Model AL LEVOTHYROXINE SODIUM (T4)
Availability In stock
Category Fat Burn Products

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Description

What is Levothyroxine Sodium T4 50 (Astera Labs)?

Astera Labs T4 in 50mcg tablets, 50 to a sachet. The gentle half of a thyroid protocol, run alongside T3 or on its own for an underactive thyroid.

Also sold as T4, L-thyroxine, Thyrax, Levoxyl, Euthyrox or Synthroid.

Levothyroxine is synthetic T4, the storage form of thyroid hormone. Your body converts it to T3, the active hormone, at the rate it decides it needs. That is what makes it the gentle one: it tops up the pool your thyroid draws from rather than forcing the metabolic rate up directly.

Levothyroxine T4 50 benefits

Runs alongside T3 to keep the T4 pool topped up while T3 suppresses your own output
The standard treatment for an underactive thyroid, and the safest thyroid hormone to take
Far gentler than T3, with a much lower risk of overshooting
Long half-life, so one dose a day holds levels steady
Makes coming off a T3 protocol smoother, because there is something in the tank while your thyroid restarts
50mcg tablets, which is a standard replacement dose

Levothyroxine T4 50 dosage

Replacement, typical start: 50mcg per day
Usual range: 50 to 150mcg per day
Adjust from: A thyroid panel, not from how you feel
Timing: Morning, on an empty stomach
Time to judge: 4 to 6 weeks
Coming off: Taper rather than stopping outright

Take it in the morning on an empty stomach, half an hour before food. Calcium, iron and coffee all reduce how much you absorb.

Adjust from a blood test. Levels build over weeks rather than days.

Package content

Tablets: 50 per sachet
Strength: 50mcg levothyroxine per tablet
Levothyroxine per sachet: 2500mcg, which is 2.5mg
Form: Oral tablets
Brand: Astera Labs

At 50mcg a day one sachet covers 50 days.

Store below 30°C. Protect from light. Do not freeze. Keep out of reach of children.

Who is Levothyroxine T4 50 for?

Two uses. As an add-on to a T3 protocol, keeping the T4 pool topped up while T3 suppresses your own output. And on its own, as the standard treatment if a panel shows your thyroid is underactive.

THYROMED 50 is the same 50mcg from Deus Medical in a boxed blister.

Before you run it. On its own, with a normal thyroid, T4 will not do much for fat loss. Your body decides how much of it to convert, so adding more of the storage form largely means converting a smaller share of it. That is not a fault, it is what makes it safe, and it is why T4 is the support half of a thyroid protocol rather than the engine. Where it earns its place is alongside T3, which suppresses your own T4 output while you run it, and as a treatment in its own right if a panel says your thyroid is genuinely underactive. Taper on and taper off, never stop abruptly. Taking thyroid hormone tells your own thyroid to produce less, and stopping suddenly leaves you with neither. That is the flat, cold, exhausted stretch people describe after a T3 run, and it is avoidable by stepping the dose down over a fortnight rather than quitting. Test before you start. Not for anyone under 18, and not for women who are pregnant or breastfeeding.

How to use Levothyroxine T4 50

Swallow with water in the morning on an empty stomach, at least half an hour before food. Keep it away from calcium, iron and coffee, which all reduce absorption.

Frequently asked questions

Is this dosed in micrograms or milligrams?

Micrograms, and the distinction matters more here than almost anywhere else in the catalogue. A tablet contains 25 or 50 millionths of a gram.

Reading mcg as mg would mean a thousandfold overdose. Thyroid hormone is one of the few things here where that mistake would land you in hospital, so check the unit on the box.

Will T4 help me lose fat on its own?

Not much, if your thyroid is working normally. Your body compensates by converting a smaller share of it, so the net change in metabolic rate is modest.

It is the support half of a thyroid protocol rather than the engine. Run it alongside T3, or on its own if a panel says your thyroid is genuinely underactive, and it does a real job in both cases.

Why would I run T4 alongside T3?

Because T3 suppresses your own thyroid output while you take it, and that includes the T4 your body would normally be converting. Adding T4 keeps that pool topped up.

The practical benefit shows at the end. Coming off a T3-only run tends to leave you flat and cold for a couple of weeks; having run T4 alongside means there is something in the tank while your own production restarts.