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Phi’s Stack Vitamins Are A Game-Changer For My Sleep

  • Writer: Julie Ask
    Julie Ask
  • Feb 24
  • 2 min read

Congratulations to Kirk & his team. 


I have been fortunate to trial Phi’s Stack multivitamin product in my role as an advisor. I’ll let Kirk speak for the efficacy of the product given the breadth of feedback he’s received, and I wanted to add in my perspective as a user. For context, I don’t believe I’m obsessive about longevity, but I am very passionate about my health, fitness, and quality of life as I age. As a mobile analyst for nearly 25 years, I experimented with and relied on mobile services to track exercise, calories, sleep, and more. With middle age, I have experimented more with supplements, vitamins, etc. Here’s what blew me away: 


  1. The quality of my sleep has improved dramatically. As an analyst and researcher, I track a lot of data. My sleep hygiene is also high. Keeping all of these factors stable, I added Stack into the mix. Within a week, I was sleeping better than I had in more than a decade.

  2. Packaging is elegant and consumer-friendly. I felt very special when I opened the cardboard box to reveal Stack’s packaging. This was unlike any other package of medication, supplements, etc. I’ve ever received. Each element (e.g., Origami, Bento boxes) just felt good in my hands. I didn’t hide anything in a closet - everything is on display in my office. Kirt and his team also focused on designing ergonomic capsules that are both easy to hold and use. They excel in form and function.

  3. Language is consumer-friendly i.e., easy to understand. The supplements ship with a full color booklet that explains not only the ingredients and their purpose but also how and when to ingest the supplements. All of the language was easy to understand. And not too sound too middle-aged, but the text is large enough to read. 


I am excited to see what they do next. Kirt has given me some hints - can’t wait. Congratulations to the team on this big milestone!

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