Not only is the injection itself reportedly painful, but the following hours and days come with a great deal of post-injection pain PIP at the injection site. Winstrol itself is known to be chemically very difficult to suspend in an oil-based solution, hence why it began as a water based suspension product and Deca Durabolin still the most common form of Winstrol Depot available. Underground laboratories, however, have discovered different recipes of solvents and co-solvents to be able to successfully manufacture Winstrol Depot as an oil-based solution. Once again, these products are exclusively Nandrolone Decanoate UGL origin at this time, anyhow.