T4

What is T4?

T4, containing Levothyroxine Sodium, is a synthetic thyroid hormone (thyroxine, T4) at 50 mcg/tab in a 100-tab pack from Dragon Pharma. Used medically for hypothyroidism, it's employed in bodybuilding to enhance metabolism and fat loss. As an oral compound, it has minimal hepatotoxicity but requires careful dosing to avoid thyroid suppression or muscle catabolism.

Mechanism of Action T4

Levothyroxine mimics endogenous T4, which is partially converted to T3 (triiodothyronine) in the body, upregulating basal metabolic rate to increase calorie expenditure and fat oxidation. It enhances protein turnover and glucose metabolism, supporting fat loss but requiring anabolic support to prevent muscle breakdown. Users notice increased energy and gradual fat loss within weeks.

With a half-life of approximately 6-7 days, T4 requires daily dosing for stable effects due to its gradual conversion to T3. It doesn't interact with androgenic or estrogenic pathways, but overuse can suppress natural thyroid function. What doesn't happen: no aromatization or significant liver toxicity, but thyroid and muscle monitoring is essential.

Overuse may lead to side effects like hyperthyroidism or muscle loss, manageable with careful dosing and monitoring.

How It Works & Key Benefits

T4 excels for bodybuilders in cutting cycles, requiring a calorie-deficit, high-protein diet and anabolic support to maximize fat loss while preserving muscle.

• Increases metabolic rate for enhanced fat loss.
• Boosts energy for improved workout performance.
• Supports lean physique goals in cutting phases.
• Enhances calorie expenditure for weight management.
• Provides steady metabolic effects compared to T3.
• Stacks effectively with anabolics for muscle preservation.

Who It's For & Product Specifications

Best for experienced bodybuilders seeking fat loss in cutting cycles; suitable for men and women with careful dosing. Not recommended for beginners, those with thyroid disorders, or without medical oversight.

Is There Anything Stronger Than T4?

T4 is less potent than T3 (Liothyronine) because it requires conversion to T3 for full metabolic effects, making T3 stronger and faster-acting. Other fat-loss compounds like Clenbuterol or DNP (2,4-Dinitrophenol) may provide more aggressive thermogenesis but carry significantly higher risks, including cardiovascular strain or severe toxicity. Always consult professionals to compare risk-to-benefit ratios.

How to Use

1. Dosage: 50-200 mcg/day for men and women, titrating up from 25-50 mcg every 4-7 days; start at 25 mcg to assess tolerance.
2. Frequency: Daily, taken in the morning to avoid sleep disruption.
3. Cycle length: 6-8 weeks, followed by 6-8 weeks off to prevent thyroid suppression.
4. Preparation/Monitoring tips: Take with water on an empty stomach; monitor thyroid function (TSH, T3, T4) and body temperature via labs; maintain high-protein diet (2g/kg body weight); stack with anabolics like Testosterone to prevent muscle loss.
5. Results timeline: Fat loss and energy boost in 1-2 weeks; peak results by 4-6 weeks.
6. PCT timing: Not required for thyroid hormones, but taper off gradually (reduce by 25-50 mcg every 4-7 days) to restore thyroid function. Align with steroid stack's PCT if combined (e.g., 3-4 days post-short ester).

Popular Stacks

Clenbuterol: Enhances thermogenic fat loss for synergy.

Anavar: Preserves lean muscle during cutting.

Testosterone Propionate: Prevents muscle catabolism during T4 use.

Cycle Support: Supports metabolic and cardiovascular health.

Comparisons & Alternatives

T4 vs T3: T4 is slower-acting, requiring conversion to T3; T3 provides faster, more potent fat loss.

T4 vs Clenbuterol: T4 boosts metabolism steadily; Clenbuterol is a beta-2 agonist with rapid stimulant effects and higher risks.

T4 vs DNP: T4 is safer with controlled dosing; DNP is extremely potent but dangerous with severe toxicity risks.

Side Effects & Risk Management

• Thyroid: Suppression of natural thyroid function—taper off, monitor TSH/T3/T4 levels.
• Catabolic: Muscle loss—stack with anabolics, maintain high-protein diet.
• Cardiometabolic: Increased heart rate, palpitations—monitor vitals, avoid in heart conditions.
• Systemic: Sweating, anxiety, insomnia—start low, take early, stay hydrated.
• Hepatic: Minimal impact—routine liver tests advised.

Review labs with a professional where lawful to ensure authenticity and safe dosing. T4 requires careful monitoring to avoid thyroid imbalances.

Post-Cycle Therapy (PCT)

T4 requires no traditional PCT, but taper off gradually (reduce by 25-50 mcg every 4-7 days) to restore natural thyroid function. Align with steroid stack's PCT if combined (e.g., 3-4 days post-short ester), using tamoxifen (20-40 mg/day) or clomiphene (50-100 mg/day) for 4 weeks, guided by bloodwork.