I have a good amount of experience with most sarms. I have used rad140, ostarine, s23, oral and injectable lgd4033, oral and injectable yk11, inj. Sr9009, mk677. Some are relatively safe others are not aka yk11. Mk677, rad140, oral lgd, and inj. Sr9009 are my favorites. I use to be with not smart people EDIT Banned so i used a lot of there stuff. I believe test with a sarm is pretty safe.