What is the cheapest KOS supplement per dose?

KOS Organic Inulin Powder at $0.18 per serving is the lowest cost-per-dose KOS product in our catalog right now.

Is KOS good value for money?

Across the 1 nutrient where we can compare KOS like-for-like, its cheapest product beats the category median cost-per-dose in 0 of them. Only single-nutrient products count — a blend's one label dose belongs to a single ingredient, so it can't be priced against a standalone shelf.

Is KOS third-party tested?

We don't have a verified third-party-testing certification for KOS. Check whether the individual product lists a Certificate of Analysis on its listing.

How many KOS deals does VitaminDB track?

We track 2 active KOS deals across 2 nutrients, each ranked by real cost per dose (price ÷ servings) so you compare value, not sticker price.

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KOS prices — cost per dose vs the category · VitaminDB

KOS

2 active deals across 2 nutrients, cheapest at $0.18 per serving. Ranked by real cost per dose.

Prices checked 58 minutes ago

The best-value KOS supplement we track is KOS Organic Inulin Powder at $0.18 per serving. We track 2 active deals across 2 nutrients, all ranked by real cost per dose.

Best value we track

Nutrients covered — compare cost per dose

Independent test results

No third-party lab data tracked yet for this brand.

NEW

🌱 Inulin (prebiotic fiber)

KOS Organic Inulin Powder

Cost per serving

$0.18

112 servings · ~112-day supply

$19.99Price from Amazon.com

KOS · Amazon.com 0

See the offer

NEW

🫀 Beetroot

KOS Organic Beet Root Powder

Cost per serving

$0.27

90 servings · ~90-day supply

$23.95Price from Amazon.com

KOS · Amazon.com 0

See the offer

Is KOS cheap? Price vs the category

KOS’s cheapest product in each shelf, against the median cost-per-dose of that whole shelf. It beats the median in 0 of 1. Single-nutrient products only, live prices.

Nutrient	Cheapest KOS	Shelf median	Difference
	$0.27	$0.27 (n=29)	0%

Median is the middle cost-per-dose of every comparable product we track on that shelf, not just this brand’s. A shelf needs at least 8 comparable products to appear here.

KOS — frequently asked

What is the cheapest KOS supplement per dose?: KOS Organic Inulin Powder at $0.18 per serving is the lowest cost-per-dose KOS product in our catalog right now.
Is KOS good value for money?: Across the 1 nutrient where we can compare KOS like-for-like, its cheapest product beats the category median cost-per-dose in 0 of them. Only single-nutrient products count — a blend's one label dose belongs to a single ingredient, so it can't be priced against a standalone shelf.
Is KOS third-party tested?: We don't have a verified third-party-testing certification for KOS. Check whether the individual product lists a Certificate of Analysis on its listing.
How many KOS deals does VitaminDB track?: We track 2 active KOS deals across 2 nutrients, each ranked by real cost per dose (price ÷ servings) so you compare value, not sticker price.