Yes you would need a test base.
If you're after a really strong sarm you could do worse than follow Aussymatt's progress on YK11 which he is currently running.
Total scam, companies with names like that give themselves away.
Doesn't stop impressionable kids from wasting a lot of money with them though I guess.
I wouldn't discuss such a personal thing with any GP as they don't understand PEDs whatsoever and in addition to that most of them are in terrible shape themselves anyway.
Also bear in mind that your aas use will then be on your medical records forever and you never know how that could be used...