It was once commonly used during PCT in the belief it will aid testosterone restoration, however this is flawed due to its mechanism of action. The drug mimics the effects of LH in the body, stimulating the Leydig cells to produce testosterone in the testes . This can be fruitful in rectify existing, or avoiding testicular atrophy on cycle. It will not aid the process of recovery in the post cycle phase however, as the drug will bring about heightened oestrogen levels due to the greater aromatising of the testosterone being produced in the testes , thus bringing about greater inhibition of the HPTA .
The most popular way to do a Clenbuterol cycle is the 2 on 2 off approach. Either 2 days on 2 days off or 2 weeks on 2 weeks off. Due to the receptors getting saturated after a period of time it is vital you take time off or else the results will start to diminish. Generally a Clenbuterol cycles will last around 6 weeks at 2 weeks on 2 weeks off, it is often also used along with T3 (thyroid hormone) and an Anabolic such as winstrol, test prop and trenbolone . Incorporating Anabolic Steroids into a clenbuterol cycle will lead to much better results.