Just started using it. Delivery was fast. Remember to refrigerate as soon as you get it. One kinda cool side effect is that you take it on an empty stomach, and you need to wait 40 minutes before you eat after you inject. The cool side effect is the wave of hunger that hits you around then. I’m taking 5IU/day split in two. Can’t comment on growth yet; this is in conjunction with a fairly heavy test/deca regimen.