Understand What’s on Your Supplement Label
Plain-English guides to vitamins and supplements, based on official sources and the labels themselves.
Plain-English labels
We explain what each line of a Supplement Facts panel means: serving sizes, %DV, ingredient forms and blends.
Official sources
Our guides are built on sources such as the NIH Office of Dietary Supplements and the FDA, and on manufacturers’ own labels.
Honest comparisons
We compare products by what their labels actually list. No paid placements change our conclusions.
Latest Guides
New guides are on the way. Check back soon.
Browse by Category
Vitamins
Vitamin labels, forms and amounts explained.
Supplements
Common supplements and how their labels compare.
Label Guides
How to read a Supplement Facts panel.
Greens & Powders
Greens powders and powdered supplements, label by label.
Beauty & Skin
Collagen, biotin and other beauty supplements explained.
Information only, not medical advice. Talk to a healthcare provider before starting any supplement. Read our Medical Disclaimer.