T3 – Proper Labs [100tab/25mcg]

Proper Labs T3 25mcg - Precision Liothyronine Formula

Proper Labs T3 offers 100 tablets of pharmaceutical-grade liothyronine sodium, precisely dosed at 25mcg per tablet. This optimal strength provides unmatched flexibility for both beginners and experienced users seeking controlled, sustainable fat loss without metabolic shock.

Thyroid Hormone Physiology

Liothyronine is the active form of thyroid hormone (T3) that directly influences cellular metabolism. It binds to nuclear thyroid receptors, modulating gene expression related to energy expenditure, thermogenesis, and macronutrient metabolism. Unlike T4, it requires no conversion and acts immediately. T3 increases mitochondrial enzyme activity, Na+/K+ ATPase activity (responsible for 20-40% of resting metabolic rate), and enhances beta-adrenergic receptor sensitivity.

Bodybuilding Applications

• Controlled metabolic elevation ideal for prolonged cutting phases
• Precise 25mcg dosing allows personalised protocols
• Prevents metabolic slowdown during extended caloric restriction
• Enhanced fat oxidation whilst preserving hard-earned muscle
• Improved carbohydrate utilisation and nutrient partitioning
• Complete supply for full cycle including ramp-up and taper

Optimal Dosing Strategy

Week 1: 25mcg (1 tablet) upon waking. Week 2: 50mcg (2 tablets) split morning/afternoon. Week 3: 75mcg (3 tablets) split across the day. Week 4-6: Maintain 75-100mcg based on response. Week 7-8: Gradual taper reducing by 25mcg every 3 days. Take on empty stomach 30-60 minutes before meals. The 100-tablet supply perfectly accommodates this 8-week protocol.

Safety and Monitoring

Monitor resting heart rate and body temperature daily. Ideal indicators: body temperature 36.8-37.2°C, heart rate below 100bpm at rest. Excessive doses manifest as anxiety, tremors, excessive sweating, and cardiac palpitations. Never discontinue abruptly; always taper. Consider post-cycle thyroid support for faster natural production recovery.