On cycle support and pct are the most important parts of the cycle... HcGenerate ES is used to keep on cycle shutdown to a minimum, keep the libido high and transition you into pct as smoothly as possible, thus, leading to a smooth recovery... N2Guard is also used as on cycle support and in pct to protect your organs amongst many other qualities... These are the best on cycle supports... HCG has its place, but the use is minimal... These are the best things to use on cycle...