This allows the body to get used to the declining hormone level and the thyroid gland can react to the sinking exogenous supply of the thyroid hormone levothyroxine (T4) and slowly increase the self-production again.
In bodybuilding, athletes speak of dosages between 200 – 400 mcg / day when levothyroxine is used for diet support.
The dosage usually begins at 100 mcg / day, is increased by 25 or 50 mcg / day every 1 – 2 days until the maximum dose of administration is reached.
At the end of the course, the dose is slowly lowered. Every 2-3 days the dosage is reduced by 25 or 50mcg / day (to zero).
It is important, That the dosage is slowly increased when starting and decreased when ending the cure so the thyroid gland will be adjusted smoothly.
Transdermal patches (adhesive patches placed on the skin) may also be used to deliver a steady dose through the skin and into the bloodstream. Testosterone-containing creams and gels that are applied daily to the skin are also available, but absorption is inefficient (roughly 10%, varying between individuals) and these treatments tend to be more expensive. Individuals who are especially physically active and/or bathe often may not be good candidates, since the medication can be washed off and may take up to six hours to be fully absorbed. There is also the risk that an intimate partner or child may come in contact with the application site and inadvertently dose himself or herself; children and women are highly sensitive to testosterone and can suffer unintended masculinization and health effects, even from small doses. Injection is the most common method used by individuals administering AAS for non-medical purposes. 
All of these fat burners, because of some of their ingredients can not be purchased over the counter or at your local nutrition store. they must be bought online or from a wholesaler. If you are an athlete that gets tested for PED's (performance enhancing drugs), make sure you check with your sanctioning body prior to using any of these products. These fat burners are a lot more stronger than most brands, so if you are a beginner or have any kind of underlying health condition, you should definitely consult your doctor before trying them. If you do decide to try them, test your tolerance by taking one capsule at a time for a couple of days. As stated previously, increase your water intake as well. If you can handle them, I am absolutely certain that each of these products will assist you in getting the results you desire as quickly as possible.