NOW Foods Supplements, Organic Spirulina 500 mg with Vitamins, Minerals…

Our verdict

NOW Foods Supplements, Organic Spirulina 500 mg with Vitamins… works out to $0.04 per serving of spirulina, at 500mg per serving in tablet form. That puts it the cheapest quarter of the 16 spirulina products we can price per dose, where the typical serving costs $0.09, a Value Index of 2.5 where the median product is 1.0. One container lasts 500 days at the label dose of 1 serving a day, about $1.08 a month. We could not verify a third-party certification for NOW 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.