T-4 is a precursor to the more powerful T-3 that is produced by the thyroid gland and regulates metabolism. The upside of T-4 supplementation is that it can be continued longer and does not typically contribute to down regulation of the thyroid gland. This means your thyroid keeps functioning normally and when you stop using the T-4 there is no fat “bounceback” as the thyroid re-adjusts.

The effect of Thyrax is to accelerate the users metabolism so that the body burns more calories. This allows for faster cutting while still preserving lean mass (your muscles). It also gives a very hard and chisled look as the fat gets stripped off the muscles and the muscles themselves become more defined.

The dosage for L-Thyroxine is 1 to 1.5 mcg per pound of bodyweight. As with any new supplement it is wise to start with the lowest dose possible and work your way up. This way you can assess for positive effects and avoid any nasty side effects, although when used properly there are few side effects to L-Thyroxine.

I recommend that you combine T-4 with an ephedra stack. This will stimulate the thyroid to convert the T-4 into the more potent thyroid hormone, thus maximizing the fat burning effect.

L-Thyroxine is a prescription drug and available only in pharmacies. L-Thyroxine is rarely found on the black market.