NOW Foods Immune Support Supplements

Our verdict

NOW Foods Immune Support Supplements works out to $0.09 per serving of astragalus, at 500mg per serving in capsule form. That puts it the cheapest quarter of the 16 astragalus products we can price per dose, where the typical serving costs $0.16, a Value Index of 1.7 where the median product is 1.0. One container lasts 90 days at the label dose of 1 serving a day, about $2.78 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.