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Disclaimer
PlainVitamins describes what supplement labels state and how they compare. It is general information, not medical advice, and it does not replace a physician, pharmacist or registered dietitian.
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Labels, not tests
Every amount is what a label states, as transcribed by the NIH Office of Dietary Supplements. Nobody here tests products. Labels can be wrong, products can be reformulated, and a seal or claim printed on a label is the label's claim; each certifier keeps its own list to confirm it.
The Daily Value and the upper limit are references
The FDA Daily Value is a labelling reference for adults and children 4 and older; it is not a recommended intake for any one person. The Tolerable Upper Intake Level is the highest daily intake unlikely to cause harm in most healthy adults; children's limits are lower, some limits count only supplements or only synthetic forms, and a clinician may prescribe more for a reason. A label above the limit is a fact about the label, not a statement that a product is unsafe for you.
Your health
Supplements can interact with medicines and conditions, and pregnancy, breastfeeding and childhood change what is appropriate. Before you start, stop or change a supplement, ask a physician, pharmacist or registered dietitian. The NIH Office of Dietary Supplements fact sheets are the federal reference on what each nutrient does. In an emergency, call your local emergency number or poison control.
FDA review
The FDA does not approve dietary supplements before they are sold, and statements on supplement labels about effects on the body have not been evaluated by the FDA. PlainVitamins repeats no health claim as its own.