In terms of ancillaries, the use of anti-estrogens is advised. For cutting puposes one will want to run Proviron alongside the testosterone for the length of the stack, which will rarely make the use of other anti-estrogens a necessity. If no Proviron or arimidex is used, you may want to keep some Nolvadex handy. Should problems arise starting on 20-40 mg of Nolvadex until a while after problems subside should be sufficient for all intents and purposes. Testosterone, being a heavily aromatizing compound, is also quite suppressive of natural testosterone (most so, safe for nandrolone) so a post-cycle therapy with Nolva/Clomid and HCG is necessary. Usually one will start HCG the last week or two weeks of a stack and run it about 4 weeks. HCG shots of 1500-3000 IU given every 5th or 6th day. That means during the end of a cycle, one shot of HCG is given per two shots of testosterone. A user should also opt to wait on using clomid or Nolvadex until the androgen is cleared. For longer esters that was to 2 weeks, obviously that time-frame should be reduced to 1 week or even half a week for propionate. One will then start on either 40-50 mg of Nolvadex or 150 mg of Clomid per day for a period of two weeks, and then follow it up with 20-25 mg of Nolvadex or 100 mg of Clomid per day for another two weeks. Post-cycle therapy will facilitate the return of natural testosterone and make it more likely for the user to retain most of the mass he gained while on the cycle.