THYROX T-3 is an all natural, pharmaceutical grade nutritional supplement from Absolute Nutrition. It is specially formulated to burn fat fast. The active ingredients in THYROX T-3 increase the rate of conversion of T-4, the low activity hormone, to T-3, the high activity hormone. This causes an increase in basal metabolic rate, or BMR, which are the number of calories one burns at rest. This is accomplished without the use of stimulants but with drug-like potency.. The main ingredient, Gum Guggul Extract, delivers a powerful 300 mg of guggulsterones per dosage. Studies have shown guggulsterones to have thyroid stimulating activity, whereby there is an increase in the conversion of T-4 to T-3. Subjects showed not only a decrease in body fat, but lower cholesterol and blood triglyceride levels as well.. THYROX T-3 also contains phosphates, which are found in high-energy compounds such as ATP and phosphocreatine. Thyroid activity is directly related to the amount of energy one possesses, thus it is important to ingest ample amounts of phosphates daily. Studies have shown that phosphates can relieve a decrease in T-3 and increase the BMR.