Guides
Clarity before hype.
Use these guides to ask better questions before making a supplement or wellness purchase.
Search by product, ingredient or evidence
Products
Nature's Sunshine Product Guide
Connect Bart's current product picks to ingredient and research context.
IngredientsSupplement Ingredient Guide
Ashwagandha, elderberry, magnesium, probiotics, milk thistle and more with primary research sources.
ResearchHow to Read Supplement Research
Ingredient studies, systematic reviews, traditional use, standardized extracts and finished-product evidence.
Core buying and evidence guides
Quality
How to Choose a Quality Supplement
A practical supplement-quality checklist before you buy.
LabelsHow to Read a Supplement Label
Understand the major parts of a dietary supplement label.
TestingWhat Does Third-Party Testing Mean?
What testing can tell you — and what it cannot.
SourcingHow to Think About Herbal Supplement Sourcing
A framework for evaluating botanical sourcing claims.
EvidenceSupplement Claims vs. Evidence
How to evaluate strong claims without getting lost in marketing.
TrustWhat to Look for in a Supplement Company
Questions that can help you evaluate a company before you buy.