CYTOMEL 25, Liothyronine (T3), a synthetic form of triiodothyronine, is the active hormone produced by the thyroid gland that regulates metabolism. It has gained traction in some bodybuilding circles due to its potential to increase metabolism and promote fat burning. However, before considering T3 for bodybuilding, it’s crucial to understand the significant risks and lack of clear evidence for its effectiveness in this context.

Purported benefits:

Increased metabolism and fat burning: T3 stimulates thermogenesis, the process by which your body burns calories to produce heat. This could theoretically lead to faster fat loss.
Improved muscle definition and leanness: Increased metabolism might lead to a leaner physique with more defined muscles.
Enhanced energy levels and workout performance: Some users report feeling more energetic and having better workouts with T3.