Last updated: April 2026
## Affiliate Relationships
Vitaei participates in affiliate marketing programs with the following partners:
- Amazon Associates
- iHerb
- Vitacost
- Thorne
- Nutricost
When you click on a link to purchase a product through our affiliate partners, we may earn a commission on that sale. This does not increase the price you pay.
## How We Use Commissions
All affiliate commissions are reinvested into:
- Independent product testing and assay verification
- Research and development of new content
- Maintaining the scientific accuracy of our index
- Supporting our team of clinician-authors
## Our Commitment to Transparency
We disclose all affiliate relationships clearly on product pages and in our methodology. Our product recommendations are based solely on scientific evidence, not on affiliate commission rates.
## No Endorsement
The presence of a product in the Vitaei Index does not constitute an endorsement. All products are evaluated based on:
- Quality of human trial evidence
- Purity and manufacturing standards
- Independent assay results
- Clinician consensus
## Questions?
If you have questions about our affiliate relationships or would like to report a concern, please contact us at:
[email protected]