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 weeks in and already feeling the difference. Sleep is better, energy is up. Impressed.
okay i genuinely didn't expect to feel this much of a difference so quickly but here we are lol. sleep is better, energy is more stable throughout the day, gym recovery is faster. the fact that it has my name on the packet is adorable too. love stack!!
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.
The packaging is some of the nicest I've seen in wellness. But beyond aesthetics, the product delivers. My energy throughout the day is more stable and I'm recovering faster from workouts. I was genuinely skeptical about personalized supplements before this.
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.
I work night shifts and my sleep schedule is chaotic. Stack's personalized formula has been the one consistent thing helping me manage my energy and recovery. The quiz took my unusual lifestyle into account, which I really appreciated.
Let me be honest — I was deeply skeptical about personalized supplements. It felt like a marketing gimmick to charge more for what is essentially just a curated multivitamin. I did my research, read the science, and decided to give it a three-month proper trial. The quiz was impressively detailed. Questions about dietary habits, stress levels, sleep quality, exercise type and frequency, specific health goals. It clearly wasn't a one-size-fits-all approach. After three months: - Sleep quality: dramatically improved. I'm falling asleep faster and waking up genuinely refreshed. - Energy: the afternoon slump that used to hit me at 3pm is essentially gone. - Gym performance: recovery is noticeably faster, workouts feel stronger. - Bloodwork: my GP ran a panel at my annual check-up and my iron and vitamin D were both in optimal range for the first time in years. The convenience factor is also underrated. One daily pack removes all decision fatigue around supplements. I've been 100% consistent for three months because the habit is completely frictionless. This is the real deal.
I started Stack after a health scare motivated me to get serious about nutrition. The quiz was thorough and gave me real confidence. Three months later my energy, sleep and mood have all improved significantly. I've referred multiple friends and all of them have had positive experiences.
I used to have like 6 different bottles on my counter. Now it's just one Stack pack a day. The simplicity is honestly the biggest selling point for me. Love that it has my name on the packet too — feels really premium.
Simple, effective, personalized. Exactly what I needed.
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 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.
Your turn
Personalized vitamins in 2 minutes. No guesswork — just what your body needs.
Take the quiz