Because of the drugs containing GS-441524 are not yet officially approved, virtually all production is concentrated in China, and a huge number of “brands” have appeared on the market. Most of them reach people through the administrators of the global group FIP Warriors (FIP Warriors CZ/SK) on Facebook. Some brands also have their own web sites and allow people to order directly. We also would like to emphasize that this is not e-shop, we are not sellers. Drugs overview is just informational.