Our methodology for independent, trustworthy product evaluations
Every product on VitalGuide goes through a structured evaluation process. We prioritize evidence over hype — our goal is to surface the products most likely to make a real difference for real people, not the ones with the biggest marketing budgets.
For supplements, we assess:
We analyze thousands of verified Amazon reviews to surface patterns in real-world usage — separating genuine feedback from marketing noise. We look at:
We calculate cost per serving / cost per use and compare it to similar products in the category. A higher-priced product may still be the best value if the ingredient quality justifies it.
We favor brands that clearly disclose:
For health claims, we reference peer-reviewed research from PubMed and other credible sources. We note when claims are well-supported by science, emerging, or lacking strong evidence.
Health research evolves and products change formulations. We review and update our content regularly to ensure recommendations remain accurate and current.
Have a question about our review process? Get in touch.