I gained around 6lbs off one bottle and it was all lean mass. Some water of course but not much. I only ran the one bottle so the gains off a 6-8 week cycle would be 12-15lbs which is very good. I switched to test cup and MTS var because my friend was making such good gains off MTS 100mg var. 50mg twice daily. I ordered more phenyl rage so l can run a complete 8 week cycle this fall. MTS products are A-1. Best products l used since pharma grade 2009