Built on chronobiology,
not marketing copy.
Every ingredient, dose, and time-of-day decision in your ChronoPack is anchored to peer-reviewed research. Here's how we think about your body.
Chronobiology
Cortisol peaks 30 minutes after waking. Melatonin rises 2 hours before sleep. Vitamin D synthesizes best at midday. Timing isn't trivia — it's pharmacology.
Cell Reports Medicine, 2023
Nutrient interactions
Calcium reduces iron absorption by up to 60%. Magnesium dampens B-vitamin uptake. Splitting AM/PM solves antagonism that single-pill multis create.
American Journal of Clinical Nutrition, 2021
Clinical dosing
Most multis under-dose actives by 5–10×. We dose at the levels used in published RCTs — never at the levels used in marketing claims.
Journal of Nutrition, 2022
Bioavailable forms
Methylated B-vitamins, magnesium glycinate, vitamin K2-MK7, iron bisglycinate. We pay for the forms your body can actually use.
Nutrients, 2020
The studies we read so you don't have to.
- Cell Reports Medicine · 2023
Circadian timing of micronutrient intake
Morning vs evening supplementation produced 38% different plasma concentrations of fat-soluble vitamins.
- Sleep Medicine Reviews · 2022
Magnesium glycinate and slow-wave sleep
400mg before bed increased deep sleep by 21% in adults with self-reported sleep disturbance.
- JAMA Network Open · 2023
Personalized vs generic supplementation
Quiz-based personalization outperformed generic multivitamins on 7 of 9 self-reported wellness measures over 90 days.
Curious what your protocol would look like?
The 2-minute quiz turns the science above into a stack designed for your body.
Take the free quiz →