Description
T4 (Levothyroxine sodium) 0,1 mg Somatrop-Lab — recombinant human growth hormone from Somatrop-Lab at 0.1 mg. Drives IGF-1 production and downstream anabolism. Cold-chain 2–8°C storage required. Minimum 3–6 months for meaningful results.
Key Benefits
- Synthetic T4 — standard-of-care thyroid hormone replacement
- Longer-acting than T3; stable serum levels once daily
- Used clinically for hypothyroidism
- Off-label use for metabolic rate support in cutting
- Less aggressive than T3 but also lower cutting utility
- Each unit dosed at 1 mg — see Recommended Dosage below for protocol-specific intake
Recommended Dosage
Clinical dosing: 50–150 mcg/day titrated to TSH/free T4. Weight-loss protocols typically 100 mcg/day but T3 is preferred for cutting due to stronger metabolic effect.
How It Works
Synthetic L-thyroxine (T4). Liver deiodinates T4 to active T3 peripherally. Unlike direct T3 use, T4 allows the body to regulate conversion rate — gentler metabolic profile, less cardiovascular stress.
Pharmacokinetics
Plasma half-life approximately 7 days. Once-daily dosing on empty stomach (absorption reduced by calcium, iron, food). Steady-state at 4–6 weeks.
Potential Side Effects
Over-replacement: tachycardia, insomnia, anxiety, weight loss beyond target. Under-replacement: fatigue, weight gain, cold intolerance. Monitor TSH + free T4 at week 6.
Cycle & Stacking Guide
Long-term replacement use in hypothyroid patients. For performance use: T3 is preferred; T4 makes sense only as a stable background layer in extended protocols. Bloodwork every 3 months.
Manufacturer Notes
Somatrop-Lab specialises in growth-hormone and peptide products with lyophilised format and strict cold-chain documentation.
Storage & Handling
Pre-reconstitution: store at 2–8 °C, protected from freezing and light. Post-reconstitution: use within 14–21 days, maintained at 2–8 °C throughout. Never freeze reconstituted solution — freezing irreversibly denatures the protein. Transport in an insulated cold-pack for trips. Keep out of reach of children. For research and educational purposes only.
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