Research, evidence, and sources
What this page is for
A page can be finished without a product. This one explains the gap and points to the energy page, where a specific marketing claim is actually discussed.
What the reviewed sources say
“Magnesium is required for energy production, oxidative phosphorylation, and glycolysis.”
Magnesium is required for energy production. That sentence describes a process in the body. It does not define vitality, and it is not evidence that a magnesium product creates it. Vitality stays off the product list for that reason.
Magnesium — Health Professional Fact Sheet NIH Office of Dietary Supplements. Updated 2026-01-06. Retrieved 2026-10-07.
The fact sheets cited on this page do not define vitality or connect it to a supplement. The index is the wider library. No product list here means we do not have support to suggest one.
Dietary Supplement Fact Sheets NIH Office of Dietary Supplements. Retrieved 2026-10-07.
“Manufacturers often promote vitamin B12 supplements for energy, athletic performance, and endurance. However, vitamin B12 doesn’t provide these benefits in people who get enough B12 from their diet.”
The closest specific claim we did review is about energy, not vitality. Manufacturers often promote vitamin B12 for energy, athletic performance, and endurance. The fact sheet says those benefits do not show up in people who already get enough B12 from food. That discussion lives on the energy page so this one does not pretend vitality is the same outcome.
Vitamin B12 — Consumer Fact Sheet NIH Office of Dietary Supplements. Updated 2023-12-15. Retrieved 2026-10-07.
How to compare a label
“The nutrition label for a dietary supplement is called a “Supplement Facts” panel.”
Start with the Supplement Facts panel. The FDA’s labeling guide uses that name for a dietary supplement’s nutrition label.
Read the ingredient name, the amount per serving, and the serving size. A blend that lists several ingredients is a different product from a bottle that is only one of them. The price on a retailer card is the package price, not a price per serving, and a sale ribbon is not a checked comparison price.
- Dosage unit converterConvert grams, milligrams, and micrograms. IU converts only when the vitamin form is known.
- Price per servingSee what one serving costs from the container price and the servings on the label.
- Cost per labeled amountSee what a labeled amount of an ingredient costs. A second product is optional.
- Daily nutrient targetsPublished folate, magnesium, and vitamin A figures for a life stage.
Dietary Supplement Labeling Guide: Chapter IV. Nutrition Labeling U.S. Food and Drug Administration. Retrieved 2026-10-05.
What the vitamin B12 fact sheet says about energy
Sources
- Magnesium — Health Professional Fact Sheet NIH Office of Dietary Supplements. Updated 2026-01-06. Retrieved 2026-10-07.
- Dietary Supplement Fact Sheets NIH Office of Dietary Supplements. Retrieved 2026-10-07.
- Vitamin B12 — Consumer Fact Sheet NIH Office of Dietary Supplements. Updated 2023-12-15. Retrieved 2026-10-07.
- Dietary Supplement Labeling Guide: Chapter IV. Nutrition Labeling U.S. Food and Drug Administration. Retrieved 2026-10-05.