sd dosages should vary depending on goals.
I like 10mg of sd to use when recomping or cutting, esp since 10mg can be ran for 6 weeks without much in the way of sides.
but, 10mg isn't easy, esp if you have ran it higher, as you know what 20-30mg will bring you.
if your goal is to get as big and strong as quickly as you can, 30mg from the first dose is the way to go.
for most, 20mg for 4 weeks is perfect.
there are other compounds you can add in to make your sd experience amazing, with testosterone of course never dissapointing.
one that I hope to stack with sd is anadrol, as the cycles i've read on this combo, are simply amazing.
everyone needs to remember, with anabolic/androgenic steroids, more gains, more sides, period. that is life, nothing is free.