Description
Overview
The active thyroid hormone directly; raises basal metabolic rate strongly.
Composition / Profile
- Active compound: Liothyronine (T3)
- Drug class: Synthetic thyroid hormone (T3)
- Pack / dose (this listing): 50tab / 50mcg
Format
- Oral tablet
- Pack / dose: 50tab / 50mcg
Dosage & Usage Patterns
- Bodybuilding (commonly cited): Sometimes cited in contest prep: ~25–75 mcg/day; potent and fast-acting; often tapered.
- Clinical / general reference: Individual and clinical; potent, so titration matters.
- Half-life: ~2.5 days.
- Protocols vary by individual, compound stack, and bloodwork — figures above reflect community-reported patterns, not medical recommendations.
Effects
Reported benefits (commonly cited)
- Strong thermogenic effect.
- Rapid fat loss.
- Significantly increases metabolic rate.
Reported side effects
- Tachycardia/arrhythmia.
- Muscle catabolism.
- Tremor.
- Sweating.
- Rebound hypothyroid symptoms after stopping.
Key Interactions
- Interacts with cardiac and diabetic medications.
- Additive with stimulants.
Precautions
- More potent/faster than T4.
- Muscle loss and cardiac risk are real, and abrupt discontinuation causes rebound.
Common Misconception
Myth: ‘T3 only burns fat.’
Evidence: at supraphysiologic doses it burns lean mass too and stresses the heart.
Related Categories
- Browse more in Fat Burners → Liothyronine (T3).
Storage
- Store in a cool, dry place away from direct light and moisture






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