Ok, this is my first post so please don't light me up if this has already been asked. Looking for an alternative to test...of course there really isn't one, but I can't find a supplier and therefore...alternative. Been doing some research on liquid S4 and it scares the hell out of me...mainly the vision side effect of seeing yellow and night vision going in the crapper. Anyone ever tried S4 and is the vision side effect due to dosage, i.e. if you dose less per day can you avoid it? Last question...any gains that are comparible to test?