Supplement Timing Guides
Every guide is written by reading the actual studies, not rewriting marketing copy. Pick a topic to dig into the details, or analyze your full stack for a personalized schedule.
How to Time Your Supplements
A research-backed daily schedule covering morning, midday, and evening dosing for the most common supplements.
Read guide →Supplement Interaction Checker
The top 5 conflicts that reduce absorption and the top 5 synergies that enhance it. Covers the most common stacking mistakes.
Read guide →Best Time to Take Vitamin D
Morning with a fat-containing meal. Learn why timing, fat pairing, and K2 co-supplementation matter for absorption.
Read guide →Can You Take Vitamin D and Magnesium Together?
They are biochemically dependent, but optimal timing means taking them at different times of day. Here is the protocol.
Read guide →When to Take Magnesium and Zinc
At high doses these minerals compete for the same transporter. Learn the timing, dosage, and forms for each.
Read guide →Want a Schedule for Your Exact Stack?
These guides cover the general rules. StackCheck analyzes your specific supplements across 124 entries and over 1 trillion possible combinations, building a custom daily schedule in seconds.
Analyze Your Full Stack →