Guide
Comparing supplement brands by their labels
The label database names 5,741 brands. Their labels show how big each catalogue is, what it is made of, how open it is about amounts, and which seals it prints. They do not show quality, which no label can.
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Written with AI tools under the editorial policy. Every figure is read from the label database, not written by the model.
Catalogue size
Brands range from one product to thousands: 2,004 brands have a single product in the database, 1,602 have 10 or more and 220 have 100 or more. Each brand page counts its products and how many are on the market, and lists them all.
Figures: NIH ODS Dietary Supplement Label Database, version 9.4.0, current labels.
What its labels list, and how much
A brand page shows the ingredients its labels list most and, for each, the brand's typical amount per serving against the market's. A brand whose vitamin D products sit well above or below the market median shows it there.
How often it leaves amounts undisclosed
Brands differ most on proprietary blends. Among the 220 brands with 100 products or more, the share of products with an undisclosed amount runs from 0% (Earthborn Elements) to 100% (Flower Essence Services). Every brand page counts its products whose labels give no amount for any ingredient; the blends analysis ranks the large brands by the share with any undisclosed amount.
Figures: NIH ODS Dietary Supplement Label Database, version 9.4.0, current labels.
Which seals it prints
8% of products print at least one certification seal. A seal applies to the product that carries it, not to the brand, and it is the label's claim: each certifier keeps a searchable list, linked from the seal pages.
Figures: NIH ODS Dietary Supplement Label Database, version 9.4.0, current labels.
Who makes it
Labels name the company responsible, often a distributor rather than the factory. The same formula can appear under many brand names, which the one-formula analysis counts. The brand page shows the company the current labels name.
What a brand page cannot tell you
Whether products contain what the label says, how they are made and tested, and how they compare on price are not in the label data. Third-party testing programmes and the FDA's warning letters are where those questions are answered.
Where next?
- All brandsEvery brand, A to Z and by size.
- Proprietary blends by brandWhich large brands leave amounts undisclosed most and least.
- Seals on labelsHow many products print which seal.