its supposed to e used every day only, you wouldnt use it just part time...
yes it does have side effects, test boosters can create bad acne, cause balding, it can also trick your testicles and your kidneys or adrenaline glands (not sure which organ besides the testicles) into thinking they do not need to produce any testosterone any more. it also can lead to agression-depression.
Not saying test boosters or even steroids for that matter are the devil, they have theyre place, and if you are a responsible and do your extensive research on how to use stuff like this, and how to
eat properly and rest properly, you could prolly use it very effectively.
My opinion as to why steroids are illegal, is because of peoples irresponsibility. Its people who get ahold of illegal steroids, and just take it not sure of the mechanics behind it, and what it will do to your body, and do nothing for there diet, its those people who give steroids a bad name, and mess up for everyone else!
Just like marijuana, we can talk about that too but I wont.