Give S4 a try. Its the one sarm that will react fast. Within 5-6 days you will notice strength gains and hardening. Within 2 weeks (well for me that is) you will see if you pick up any vision. Most of the time just a hint of yellow from lights, and maybe slower for your eyes to adjust. I notice it but didn't bother me. That was 50mg. Now Im on the second time and I think my body has adjusted to S4 no sides at all. Im worked up to 56.25mg and no sides. Next week Ill work up to 62.5mg and see. Again this is me, but you will love S4 its a must