I have cycled slin about 5 different times,with and without steroids.In my opinion it is only worth it if you use it with steroids,it did not do shit for me without stacking it with juice.The last time I used it,I took it 4 times a week half way through each workout,I gained about 10 more pounds than I normally do when juicing alone.BTW,I was using humalin R,that's why I was using it during my workout ,because it is much slower acting than humalog.