Etho Masterone 200mg/ml 10ml is a strong androgenic product which is used to increase lean mass and strength. It is used as an injectable steroid which is typically injected once every 1-2 weeks. It provides improved levels of circulating testosterone within the body. It increases both the nitrogen retention and protein synthesis, resulting in improved muscle production and repair, while at the same time suppressing androgenic activity. Its potential side effects include hair loss, acne, and increased aggression.