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…
been using stack for about 6 weeks and honestly pretty happy with it. energy is better, sleep has improved. the quiz was more detailed than i expected which was reassuring. only feedback is i wish i could update my quiz answers every few months as my routine changes.
Okay so I was really doubtful at first but after a month I am OBSESSED. The energy difference is real, like genuinely noticeable. Sleep has been SO much better. The little pack with my name on it is such a cute touch. Definitely recommending to everyone I know.
didn't expect to write a review but here i am because the results genuinely surprised me. energy and sleep are SO much better.
Energy, sleep, recovery — all noticeably better after 4 weeks. The quiz is thorough and the personalization is real.
One pack. Done. My energy is stable all day and I'm actually sleeping properly now.
What I appreciate most is that the quiz asks about my actual lifestyle — stress levels, sleep quality, diet — not just my age. That's real personalization. The results show in how I feel every single day. I've cancelled every other supplement subscription I had.
used to take like 5 different supplements every morning and always forgot at least two of them. now i take one stack pack and that's it. so much simpler. and the results are actually better than when i was doing it all separately which is wild.
Getting my quiz results and understanding the areas I needed improvement on was fantastic. I now have a much better understanding of my body. Taking the supplements is simple and I have been feeling great since starting. Stack has also cleared out my vitamin cupboard completely.
Skeptical at first. Now a total convert. My whole morning feels different.
The quiz was great and the concept is REALLY smart. I just haven't felt the dramatic improvements after 6 weeks. Energy is maybe slightly better but nothing wow. Might just need more time. Not giving up yet.
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 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 understand what you're actually taking. Stack sits in a completely different category. The quiz is the first thing that impressed me. It asks genuinely intelligent questions — not just 'how old are you and what's your gender' but questions about your diet, your sleep patterns, your stress levels, your exercise frequency. It felt like a real consultation rather than a data collection exercise. The pack that arrived was clearly personalized to my answers. After six weeks, the improvements have been consistent and measurable: better sleep quality, more stable energy throughout the day, and noticeably faster recovery after my runs. My partner commented that I seemed more 'on' in the evenings rather than crashing after dinner. The daily pack format is brilliant for compliance — I've been 100% consistent because the habit is so frictionless. One pack, done, every morning. No bottles, no measuring, no forgetting half of them. Genuinely one of the best health investments I've made.
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