I'm on currently and taking
All-in-one protein powder 2 shakes on workout days 1 otherwise (includes creatine, BCAAs and beta alinine)
Taurine 5mg per day
Milk thistle 1 mil per day
When off aside from PCT I'll take
Lots of Vitamin c tabs spread throughout the day
Creatine ethyl ester
I've never went too heavy on supplements, I did a lot of reading on them a few years ago and found 90% of the time very little convincing evidence to say there is a significant benefit... with the exceptions of protein and creatine... also I gained probably 80% of what I have now without taking any supplements at all. I worked at my diet and trained hard, no protein shakes or anything. Of course those were natural gains.