Tier I is open to everyone. Tier II is yours, free.
Vital Codex publishes every article in two tiers. The primer is public and always will be. The deep dive — mechanisms, dosing, nuance, and citations — unlocks with a free membership. No payment card, no paywall, no upsell.
Every Tier II deep dive
Full mechanisms, dosing detail, nuance, and citations across all nine hubs.
Saved reading progress
Pick up where you left off — tracked across every article you open.
Downloads & printables
Protocol summaries, framework sheets, and printable module guides.
Personalized tools
Exposure quizzes, lab-reading frameworks, and knowledge modules built for members.
Frequently asked
Is membership really free?
Yes. Vital Codex membership is free and requires no payment card. Tier I articles are fully public; Tier II deep dives unlock with a free membership.
Why gate Tier II at all?
Tier II is where the mechanisms, dosing ranges, and citations live. Membership lets us build a direct relationship with serious readers instead of depending on platforms and ad networks.
Will Tier I ever go behind the gate?
No. Tier I is permanently free, public, and indexable. That commitment is part of the publication's structure.