Cheapest Vitamin A (as carotenoids)(naturally occurring) on iHerb

Ranked by real cost per 100 mcg of Vitamin A (as carotenoids)(naturally occurring) — cheapest value first.

Prices updated Jul 25, 2026 · 8 products · Prices in USD

The priciest option here costs about 2.7× more per 100 mcg of Vitamin A (as carotenoids)(naturally occurring) than the best-value pick Source Naturals. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 100 mcg
1
Source Naturals, Spirulina, 500 Tablets
Source Naturals, Spirulina, 500 Tablets
Source Naturals
510 mcg8323.140.055View on iHerb →
2
Source Naturals, Spirulina, 200 Tablets
Source Naturals, Spirulina, 200 Tablets
Source Naturals
510 mcg3310.050.060View on iHerb →
3
Source Naturals, Yaeyama Chlorella®, 4 oz (113.4 g)
Source Naturals, Yaeyama Chlorella®, 4 oz (113.4 g)
Source Naturals
360 mcg379.690.073View on iHerb →
4
Source Naturals, Yaeyama Chlorella®, 8 oz (226.8 g)
Source Naturals, Yaeyama Chlorella®, 8 oz (226.8 g)
Source Naturals
360 mcg7524.330.090View on iHerb →
5
Source Naturals, Yaeyama Chlorella®, 300 Tablets (20 mg per Tablet)
Source Naturals, Yaeyama Chlorella®, 300 Tablets (20 mg per Tablet)
Source Naturals
240 mcg308.270.115View on iHerb →
6
Source Naturals, Chlorella, 200 Tablets
Source Naturals, Chlorella, 200 Tablets
Source Naturals
240 mcg5016.600.138View on iHerb →
7
Source Naturals, Yaeyama Chlorella®, 600 Tablets, (20 mg per Tablet)
Source Naturals, Yaeyama Chlorella®, 600 Tablets, (20 mg per Tablet)
Source Naturals
240 mcg6020.990.146View on iHerb →
8
Source Naturals, Chlorella, 500 mg, 100 Tablets
Source Naturals, Chlorella, 500 mg, 100 Tablets
Source Naturals
240 mcg258.890.148View on iHerb →

How we rank Vitamin A (as carotenoids)(naturally occurring)

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.