you've got the wrong compound: 4-0H-deca is different here's some info and yes it is meant to be injected EOD.
Nandrolone, or the better known "street name" of Deca Durabolin is one of the most favorite steroids of all men and even women. More anabolic then testosterone, yet less androgenic ... so less "secondary male characteristic" side effects such as excess body hair, male-pattern baldness, deepening of the voice, etc., etc.
Pretty much everyone who has every done a steroid cycle does so with either Deca and/or Testosterone. The reason Deca was even created back in 1962, was to simply reduce testosterone's side-effects while enhancing it's positive anabolic effects.
It worked! ... except that it came with one very ugly side-effect, the dreaded "deca-dick". Basically, due to some estrogenic activity and more so, a lot of progestin-like activity, most users of Deca would experience lowered sex drive, to the point of impotency.
What we have done is modified the original nandrolone compound with an alteration in the "position 4" with a hydroxyl group and the end result is an amazing compound that's very similar to that of Deca, but with NO side-effects!
This means more muscle, less fat gains, no estrogen or progesterone bloating or gynocomastia ("bitch tits") and most importantly, NO "deca dick" or lowered sex drive.