Testosterone Propionate promotes nitrogen retention in the muscle (6), and the more nitrogen the muscles hold the more protein the muscles store, and the bigger the muscles get. Testosterone Propionate can also increase the levels of another anabolic hormone, IGF-1, in muscle tissue. IGF-1 is alone highly anabolic and can promote muscle growth.
For example, 100mg of Testosterone-Propionate administered on day one will fall to 50mg by day 4 and 25mg by day 8 and so on. Conversely, so that you may understand the significance, 100mg of Testosterone-Cypionate administered on day one will fall to 50mg but not until day 12 post injection. For this reason, in order to maintain stable and peak levels of the hormone in the body we must necessarily administer the hormone once every 3 days with every other day being optimal.
How to use:
Many peoples favorites are Equipoise (Boldenone Undeclyenate) or Deca Durabolin (Nandrolone Decanoate), but really, anything will stack well with Testosterone Propionate. Trenbolone (Trenbolone Acetate), Masteron (Drostanolone), and Winstrol (Stanozolol) are also favorites for many on a cutting cycle. Its important to remember that since Testosterone Propionate has such a short ester, most people stack it with other short estered drugs, the rational being that they need to endure frequent injections for the Testosterone Propionate to be effective, so they may as well be using other drugs requiring the same dosing protocol.