Couple of disclaimers before I get into it:
*I have done a bit of research on different supplements, however the amount of very different reviews and different stacks becomes confusing.
*I know there are people who believe natural supplements do very little and the hard stuff is the only way to go, but that isn’t an option for me.
I am 25, currently weigh around 75kg and I compete regularly in Kyokushin karate and kickboxing.
I used to sit between 65kg (lean) to 70 kg but early this year I made the decision to go heavier – I upped my calories first and this helped, and I also did a bit of research into herbs and sups that boosted testosterone, I took them every day and in the first few months I had great results.
Stack I was taking (no science behind the stack or how they complement each other)

Vitamin C, Multi Vitamin, ZMA
Tribulus
Testoroid
5 Methoxy-7 Methoxy
I think it was 6 OXO? Or 3, 6, 17 Androdesterione??
Beta Ecdesterone
Maca Root
Forskohilli
And also a ‘mens’ topical cream with a number of herbal ingredients
Creatine, Protein powder, NoXplode and Beta Alanine
I was lifting heavy weights (for me) with separate days for chest (max bench 112kg), back (max dead lift 180kg), tris and bis...didn’t do legs
I got to 80kg relatively quickly and there was a definite size and strength difference, albeit higher fat content but my physique was ok.
Not sure if it was all a placebo effect, but when I stopped all these sup’s I couldn’t gain anymore, I completely got stuck at 80kg.

I have since dropped back to 75kg for a recent fight, but I want to jump to 85kg as quick as possible without taking anything banned by the Anti doping fed.
I have a few tablets left of each of the above minus the Andro and the Beta.
My question is, what to take, what not to take etc. What stack do you recommend? I have done some reading on ‘supabol’ and that seems pretty powerful? I don’t mind if it is synthetic just as long as it isn’t banned...10kg is a big number but I am a believer in these sups and willing to work hard.
Any information would be greatly appreciated – detail a powerful stack for me guys