Levothyroxine – 40mcg Tablets | Thyroid Hormone for Fat Loss, Metabolism & Contest Prep

Description:

Levothyroxine is a synthetic form of T4 thyroid hormone used to support metabolic rate, fat loss, and energy regulation. In bodybuilding, it is occasionally incorporated during cutting phases or contest prep to accelerate fat burning, enhance definition, and maintain metabolic output—especially in prolonged caloric deficits.

By increasing resting metabolic rate, Levothyroxine may help users achieve a leaner, harder physique when paired with proper diet and training.

Key Benefits:

Increases basal metabolic rate (BMR)
Supports fat loss and definition during cutting phases
Helps maintain energy and metabolism while dieting
Often used in advanced contest prep protocols
Synthetic T4 – long-acting thyroid support

How It Works:

Levothyroxine mimics thyroxine (T4), the primary hormone produced by the thyroid gland. It is converted in the body to the more active T3 (triiodothyronine), which regulates cellular metabolism, fat oxidation, and energy production.

In a bodybuilding context, Levothyroxine is sometimes used when natural thyroid output slows during prolonged dieting or enhanced cycles. It may help preserve metabolic output, improve fat loss, and maintain a tighter, leaner appearance.

Suggested Use:

Strength: 40mcg per tablet
Typical Dose: 25–100mcg daily, titrated based on tolerance and bloodwork
Administration: Oral, once daily (preferably in the morning, on an empty stomach)
Cycle Application: Cutting cycles or pre-contest preparation
Notes: Should only be used by experienced individuals under guidance; overuse may suppress natural thyroid function