test at dosages from 200mg to 800mg.....anything greater and you may decrease it (so I have heard, I've not run it that high)........But, the combo your taking matters, for example:
1- test prop at 100mg ED had me absolutely insane
2- test prop 100mg fina 75mg sex drive was up a little
3- test enth 100mg deca 100mg sex drive up quite a bit
4- test cyp 600mg dbol 25mg ED its about the same
Do a search on google or some other search engine. All 3 are OTC, and can be found on the internet. I give you a lead, now do the rest of the leg work and find out.