Great product seems to work well
For the last year I've researched, produced and tested ecdysterone products for my own site- gymvikingusa. Getting wholesalers to send you legit 90%+ ecdysterone is rare. But, occasionally I'll buy a company's product to test and try out. I can tell you that Double Woods is legit over 90% sterones. You can tell by the color and, of course, after distilling down and removing any plant fiber material. The only drawback is that it is in simple form. i.e. no complexing to increase bioavailability. So, you have the best purity of the mainstream market, but it's cut with a tiny percentage of rice flour- which chunks and gunks if you try to process it. To me it's like putting bad gas in a ferrari. That said, you won't find a higher purity on the mainstream market.
I have my own small supplement company that specializes in producing highly absorbable versions of already effective products. While developing my first product, along with other sources, used Double Wood ecdysterone in my experimentation. I found it to be a better bargain for plain ecdy than others on the market. Keep in mind that when tested by nootropics depot, double wood ecdy had an actual 50% beta-ecdysterone by HPLC. Anecdotally you can count on nearly double the HPLC testing for total sterones. So their 98% was actually somewhere close to 90%- the only mainstream source on the market that was anywhere near that high. (except botany.bio which is more research only/gray area)
Since starting this suppliment I have added 40 lbs. to my bench press and lost 2% body fat.