No. After you finish using Radbulk, you will not need to do a post-cycle therapy (PCT). PCTs are necessary after you have been using SARMs and steroids because the chemicals they provide ruin normal hormone production. A PCT is the best way to nurse your body back to its regular hormonal strength. Radbulk does not suppress hormone production. None of the Brutal Force SARMs substitutes do, so there is no need to worry about a PCT.