Stealth Labs Liothyronine (T3) 50 mcg – Potent Thyroid Support for Fat Loss and Energy
Stealth Labs Liothyronine (T3) offers high-quality, pharmaceutical-grade Liothyronine Sodium in a 50 mcg oral tablet format. This synthetic form of the T3 thyroid hormone is used to boost metabolism, promote fat loss, and enhance energy expenditure—especially during intense cutting or pre-contest phases.
What Is Liothyronine (T3)?
Liothyronine is the active thyroid hormone responsible for regulating metabolic rate, cellular activity, and overall energy production. It is widely used in the bodybuilding and athletic community to accelerate fat loss while preserving lean mass. As noted in clinical literature from the NCBI, T3 therapy is highly effective in treating hypothyroidism and enhancing thermogenesis.
Lab Quality Results

Tested on 2024-01-18, Stealth Labs T3 meets potency standards with a precise 50 mcg dose per tablet, validated for purity, consistency, and stability.
Why Athletes Use T3
- Enhances basal metabolic rate (BMR)
- Increases energy output even at rest
- Accelerates fat mobilization and oxidation
- Improves nutrient partitioning in caloric deficits
- May increase responsiveness to other fat-burning agents
Suggested Dosage and Protocol
T3 should be started at low doses and titrated carefully to avoid muscle loss or suppression:
- Beginner: 25 mcg/day (morning dosing)
- Intermediate: 50 mcg/day split AM/PM
- Advanced: Up to 75 mcg/day for short durations
Do not exceed 6–8 weeks per cycle. Taper down gradually to avoid rebound hypothyroidism.
Effective Stacking Options
T3 is often stacked with anabolic compounds or fat burners for maximum impact. Common pairings include:
Post-T3 Cycle Considerations
Natural thyroid function typically resumes within 1–2 weeks after cessation, but tapering is advised. Some users bridge with adaptogens or support agents like ashwagandha, selenium, and iodine to ease transition.
Who Should Avoid T3?
Individuals with uncontrolled heart conditions, adrenal fatigue, or hyperthyroidism should not use T3. Always monitor resting heart rate, body temperature, and caloric intake to adjust dosing accordingly.
Where to Buy T3 Online
Looking for lab-tested thyroid hormone tablets? You can order this 50 mcg Liothyronine from Stealth Labs with fast domestic USA shipping, full batch traceability, and guaranteed purity.
Frequently Asked Questions
Is Stealth Labs T3 safe for beginners?
Yes, when dosed responsibly. Beginners should start with 25 mcg/day and monitor for overstimulation, heart rate changes, or fatigue.
Can I stack T3 with Clenbuterol?
Yes. T3 and Clenbuterol are commonly stacked during cutting phases for synergistic fat-burning effects. Start both compounds low and titrate carefully.
Does T3 suppress natural thyroid function?
Yes, temporarily. After a T3 cycle, thyroid function typically recovers within 1–2 weeks. Tapering down and support supplements can help.
What's the difference between T3 and T4?
T3 (Liothyronine) is the active thyroid hormone, while T4 (Levothyroxine) is the inactive storage form that must convert to T3 in the body. T3 is faster-acting and more potent.
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