Source Naturals Manganese

Our verdict

Source Naturals Manganese works out to $0.05 per serving of manganese, at 10mg per serving in tablet form. That puts it below the median of the 11 manganese products we can price per dose, where the typical serving costs $0.09, a Value Index of 1.6 where the median product is 1.0. One container lasts 100 days at the label dose of 1 serving a day, about $1.61 a month. We could not verify a third-party certification for Source Naturals in a public registry. Worked out from the current retail price as of 2026-11-13; confirm the live price on Amazon.com before buying.