International 
Quantity discount 
Weight Management
1 vial x 20 mg
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T3
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Characteristics
ACTIVE HALF-LIFE
10 hours
Classification
Thyroid hormone
Dosage
25-100mcg/day
ACNE
No
WATER RETENTION
No
HBR
No
HEPATOTOXICITY
No
AROMATIZATION
No
Active Substance
FORM
100 tabs x 50 mcg/tab
Manufacturer
Shipping Information
- Currently, orders from our International Premium Warehouse 1 can be shipped to continental United States only .
- Temporary shipping restrictions apply to Hawaii and Alaska. (available exclusively through our domestic warehouse (USA Warehouse 1)
- Military addresses (including APO, FPO, etc.) are currently not supported.
- PO Box, mail box deliveries are available exclusively through our domestic warehouse (USA Warehouse 1).
Description
T3 - BTW LABS
100 tabs x 50 mcg/tab
What it is and How it Works
T3, or Liothyronine Sodium, is a synthetic thyroid hormone that mimics triiodothyronine, one of the body’s most active thyroid hormones. T3 regulates metabolic rate by increasing mitochondrial activity, oxygen consumption, and nutrient utilization. In bodybuilding, it is used to accelerate fat loss, enhance energy expenditure, and improve definition during cutting or contest prep.
While highly effective, T3 can also cause muscle loss if not stacked with anabolic steroids, as its catabolic effects extend to both fat and muscle tissue. Other side effects include rapid heartbeat, anxiety, insomnia, sweating, and long-term thyroid suppression if misused.
How is it used?
T3 is taken orally and has a half-life of about 24 hours, making once-daily dosing sufficient. Bodybuilders typically use it in short cycles, either ramping the dose up gradually or maintaining a moderate steady dose throughout. It is often stacked with anabolic steroids to preserve muscle while dieting, or with fat burners to amplify results.
Dose
This product is dosed at 50mcg per tablet × 100 tablets per sachet. Performance use typically starts at 25mcg per day, with gradual increases up to 50 to 75mcg daily. Advanced users sometimes reach 100mcg per day, though risks rise significantly. Cycles usually last 4 to 6 weeks to reduce the chance of long-term thyroid suppression.
Advice From BTW
-
Start low, go slow: Begin at 25mcg per day and increase gradually to assess tolerance.
-
Always stack with AAS: Without anabolic support, T3 may burn muscle along with fat.
-
Do not run long cycles: Limit to 6 weeks to avoid thyroid shutdown.
-
Watch your heart: Monitor heart rate and blood pressure closely during use.
-
Post-cycle recovery: Allow your thyroid to normalize naturally by tapering down instead of stopping abruptly.
Categories: Fat Loss – Aesthetics – Mood – Endurance
FAQs
-
Is T3 the same as thyroid medication? Yes, Liothyronine Sodium is a prescription thyroid medication but is often used off-label in bodybuilding for fat loss.
-
Can T3 burn muscle? Yes, without anabolic support it can be catabolic to muscle tissue as well as fat.
-
How quickly does T3 work? Its effects on metabolism and fat loss are noticeable within a few days of starting.
-
Do I need to taper off T3? Yes, tapering down the dose helps your thyroid function recover more smoothly.
-
Can women use T3? Yes, but usually at lower doses (12.5 to 25mcg daily) due to increased sensitivity and higher risk of side effects.
Why Choose Us? We take pride in providing products that meet the highest standards of quality and consistency. Every batch is third-party tested to ensure accurate dosing and purity, so you know exactly what you are putting into your body. Our packaging is designed for both safety and discretion, and our customer support team is always available to provide guidance. Whether you are a beginner or an advanced athlete, choosing us means choosing reliability, trust, and a partner who values your performance and well-being.
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