There is no safe nor harming things in life then not fully understanding the thing your doing. People are dieing of starvation, on the other hand people are dieing of eating to much. Take to much caffeine and you will die, to many vitamins and you will become sick.
You get my point, i would say that Testosteron is the safest steroid out there. Many people say its anavar and primobolan because they dont shut you down as much as testosteron does, problem is that this is a "chain" from the original testosteron molekyle, so you only get some effects out of it and not the fully benefitial effects that our body runs on, wich is testosteron it self.
Testosteron is made in the humanbody itself and therefore you will funktion normaly while cycleing it. Prohormones are just in my "oppinion" junk, alot of people get side-effects and cannot tell why, because there is not alot of research behind the "DRUG" and not medication.
As far as testosteron goes 250mg = 1ml normaly of testosteron ethantate, E is the ester of the oil wich will determen how fast it will absorb and how many times you´ll need to shoot to keep blood levels stabile.
Since the normal human body produces around 75mg + testosteorn a week, 250mg is going to be alot. This will make you body a muscle building machine, since thats what testosteron does. As far as side effects goes aggresion, which if you are a good human being can direct into alot of aspekts of life and get alot of good stuff out of it, work, gym, social life, sports ect.
Since your going from 75+ to 250mg a week your body will try to return to homostatis, thats why caffeine does not work for the rest of our lives after one cup, same as NO products it might work but your body will quickly counter act to be normal and stabile "homostatis" Since your the jump is so big, your body will increase aromatise enzyme, wich will convert testosteron to oestregene. Resulting in bloat, alittle higher blood pressure, and some strength since your body will hold more water.
This effect and be counter acted with alot of supplements that we are fortunate to have now, instead of using SERMs like nolva that a nothing but **** to use. So testosteron will in many ways make you a better alpha male and in the bed
The difference is that you´ll need to inject it, that only assist your liver in staying healthy instead of throwing a rock down there.
Im not going to advise you to use, steroids nor prohormones. If you go for either one, i would request you to draw blood so that you know your starting point, when cycle is finish wait 2months and redo bloods on cholesterol and hormones to see if everything has returned.