Synthroid (T-4): 100mcg tablets. Each order contains 30 hard pressed tablets; tablets contain 100mcg of Levothyroxine Sodium.

Inactive ingredients: Microcrystalline cellulose, magnesium stearate, Silica Di Oxide, Di-calicum Phosphate and USP grade food coloring.

All of our products are laboratory tested. We are working to make test results available to our customers. When labs are available you will be able to find them here. Link to lab

Synthroid (Levothyroxine Sodium)

What it does:

Synthroid (Levothyroxine Sodium) is a synthetic form of the thyroid hormone T4, used to increase metabolic rate, regulate energy, and support fat loss. It enhances the body’s overall metabolism by replacing or supplementing naturally low thyroid hormone levels, making it a valuable tool in both medical and physique enhancement settings.

Normal Applications:

Synthroid is medically prescribed for hypothyroidism, goiter, and thyroid hormone replacement therapy. In performance use, it may be utilized during cutting cycles to accelerate fat loss and maintain energy during calorie restriction. It is often stacked with T3 (Cytomel) or Clenbuterol for advanced metabolic enhancement.

Common Side Effects:

When dosed appropriately, Synthroid is well tolerated. Overuse can lead to symptoms of hyperthyroidism, including anxiety, insomnia, heart palpitations, muscle loss, and increased body temperature. Long-term misuse may suppress natural thyroid function and impact cardiovascular health.

Administration Recommendations & Ideal Dosages:

Typical therapeutic doses range from 25–100 mcg per day, adjusted based on blood work and response. In physique settings, users often start low (e.g., 25 mcg) and taper slowly to avoid side effects. It should be taken on an empty stomach in the morning. Blood monitoring and post-cycle tapering are recommended to avoid rebound effects.

Tagged Oral Tablets