As my first time tasting dubby, I'd like to say it was amazing on the flavor. Slight bitterness at the bottom of the shaker and it seemed the particles didn't dissolve fully but in all honesty great flavor when in comparison to other products.
On the side effects side of thing and physical/mental effects, I'm going to start out by saying ADHD so it's hard to focus on things. I have tried 100s of supplements that give you energy but help you focus without take it away and I can't stand taking the meds the doctors want me to take. I also have IBS and GERD which are 2 stomach conditions that limit me from ingesting certain foods and drinks. I haven't found a energy supplement that I could drink without having stomach discomfort or other side effects.
Dubby on the other hand, my first night I did a live I tried dubby on screen. Actually helped me stay up 3 hours past the time I'm usually falling asleep. No stomach issues nothing at all great time.
Second day I drink one 16OZ shaker at 10am. Nice performance thru out the day. No issues, but that night I mixed a second cup for a test, 8 hours later (note half scoops each time due to not having dubby) got half way thru and had a stomach attack. ( I'm ok don't worry whoever is reading this it happens Everytime I OVERDUE something.) So maybe you should put a lable on there saying people with stomach issue constantly a doctor or something not just if you have heart issues.
So I also drink a 4th 16oz shaker today on Tuesday March 10. I drank it between the times of 11am and 2pm and iv had no issues with my stomach or anything and the energy was amazing no crash or shakes either. This just tells me my personal limit is one shaker a day because of my stomach instead of where is says I can consume 2 a day. This is a personal set limit because of my health issues.
To finish up this review, I really liked the sample and would love to try more and share more with the community. I'm just a family man so affording items is an issue.
If I had more items I could share with the community that would be great. I have finally found a energy supplement I can take and not have to worry about the side effects from my stomach conditions. It's all thinks to you using the coffee bean because I can drink coffee no issues I drink a pot a day usually. Now it's just a 16oz shaker of dubby and I'm good to go!!! ( This is 100% honest and from a true perspective on the health effects, and mentality state you have when consuming dubby. This is also 100% my own opinion but any health information is beneficial to everyone so please consume anything with carful care and consideration for your own health. Some can drink like a fish while others like me have to sip lmao.
Hope this helps and like I said, would to sample more so I can share for.