ZOE Zebutol had become "iffy" from batch to batch and I think AN was the intended replacement. To my knowledge, it was the very first product to combine the highly effective "stack" of a test booster and Ecdy on the market. How that's been over-looked all these years, I don't know.
The original formula I believe, contained Bulgarian Trib, Suma Sterol extract, Pantocrine (a Russian adaptogen derived from deer antler), DHEA and Melatonin.
AskMass didn't know this at the time but I ran before/after saliva work on it and it boosted my test around 30%, or about the exact amount cited in the trib studies at the time. I was impressed enough to call him and he asked me to write a short article in his (then paper) newsletter. Thus, I guess you could say my writing career was born.
Fast forward 6 years or so and the formula was upgraded. The Pantocrine became too expensive, so Eurycoma Longifolia was introduced as the replacement. Subsequently all the other ingredients had increased in strength. I decided it was time to put that one to the test, this time via blood work. Result? 55% increase in total test in 27 days!
Today, it contains even higher grade extracts of Bulgarian Trib, Ultra Suma, Longjax etc.. I've got a factory fresh bottle ready to go and another I'll be adding once my 21% off coupon is used

Adaptogen N is so good (and again this is personal opinion), I almost built The Blueprint around it!
Now I'm not saying it's the only quality product of it's kind out there. It is however, an awful sharp product and stood the test of time: Something like 12+ years of being at the top of the repeat buys list, according to AskMass. If you've used it prior or are running it now, please weigh in regarding your experience with it, both positive or negative. I'm NOT on here looking for puff pieces or JUST positive endorsements, although I'm sure there will be many.
Your feedback means a lot to me and I'm sure AskMass. It's one of his flagships and I know he constantly strives to improve his products.
So please, weigh in!!