HGH injections, how often to change needles?

Needles for HGH pen ( Genotropin example ) need to be changed every new injection, and only a single using, are several reasons for this:

- sterility injection

- the new needle is completely painless

some customers save on needles, after the first use, the needle begins to blunt and begins to cause discomfort

we recommend changing needles to new ones every new injection