Customer Reviews
Your feedback shapes every formula we build. Read real stories from members, share yours, and see how personalized stacks are working for women like you.
Average rating
from 473 reviews
Worth a read
The reviews are in — and they've been loving the results.
I've tried so many supplements and honestly nothing has worked like this. The quiz is actually thorough and the results show it. Energy is UP, recovery is UP, sleep is SO much better. Can't believe it took me this long to find this brand.
Three weeks in and I already feel the difference. My morning energy is COMPLETELY different. No more dragging myself out of bed. The personalization through the quiz is what makes it work — it's not just a generic multivitamin. Stack actually thought about what MY body needs.
I've been on a health optimization journey for about three years and have tried what feels like every supplement brand on the market. Most of them are either generic multivitamins dressed up in pretty packaging, or they're so specific that you need to be a nutritionist to…
Three months in and I've referred four friends. The combination of a proper personalization quiz and daily individual packets is exactly what this industry needed. Stack totally nailed it. My energy and sleep have both improved a lot.
I've tried so many supplements and honestly nothing has worked like this. The quiz is actually thorough and the results show it. Energy is UP, recovery is UP, sleep is SO much better. Can't believe it took me this long to find this brand.
Solid product that does what it promises. My sleep has noticeably improved and the daytime energy is more stable. Dropped one star only because I had a small shipping delay — but customer service sorted it quickly. Would still recommend.
My skin has genuinely improved since starting Stack. I wasn't expecting that as a side effect but it makes sense — when your micronutrients are dialed in, everything benefits. And the energy is just... consistent. No peaks and crashes anymore. Would absolutely recommend.
Been on Stack for four months and I've basically forgotten what the afternoon energy dip feels like. That alone has transformed my productivity. Add improved sleep and faster workout recovery and you have a product I'll never stop taking.
I've been using Stack for about two months now and my overall experience has been positive. The quiz was genuinely thorough — more so than I expected — and the personalized pack that arrived clearly reflected my answers. Results have been good. My energy throughout the day is more stable, I'm sleeping better, and my workout recovery has improved. These are real, noticeable changes and I'm happy about them. The reason I'm giving 4 rather than 5 stars comes down to a few things I'd love to see added: 1. An app or dashboard to log how I'm feeling over time and track progress 2. The ability to re-take the quiz as my lifestyle changes (I changed jobs since signing up) 3. More in-depth explanation of each ingredient in my pack and why it was chosen for me The core product is excellent and I'll keep subscribing. These are improvements I hope the team considers.
Three months in and genuinely pleased. The personalization through the quiz works well and I've felt real improvements in energy and focus. Minor feedback — it would be great to have an option to update my quiz answers as my lifestyle changes.
thought it would be like every other supplement brand. nope. feeling genuinely better after 5 weeks.
Been on Stack for four months and I've basically forgotten what the afternoon energy dip feels like. That alone has transformed my productivity. Add improved sleep and faster workout recovery and you have a product I'll never stop taking.
i was a bit skeptical about personalized vitamins but honestly the quiz was really thorough and i could tell alot of thought went into it. been taking it for 6 weeks and my energy has definitly improved. sleeping much better too. definately recommend to anyone who wants to get serious about their health.
Solid product that does what it promises. My sleep has noticeably improved and the daytime energy is more stable. Dropped one star only because I had a small shipping delay — but customer service sorted it quickly. Would still recommend.
The quiz experience alone sold me — it actually asked smart questions about my lifestyle, not just age and gender. Felt like it was designed by people who genuinely know nutrition. Been on it for 2 months now and I love it.
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