Get Started Free

Cheapest Organic Spirulina on iHerb

Ranked by real cost per 1,000 mg of Organic Spirulina — cheapest value first.

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

The priciest option here costs about 242.4× more per 1,000 mg of Organic Spirulina than the best-value pick Nutricost. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 1,000 mg
1
Nutricost, Organic Spirulina, Unflavored, 32.4 oz (907 g)
Nutricost, Organic Spirulina, Unflavored, 32.4 oz (907 g)
Nutricost
1,000 mg90729.950.033View on iHerb →
2
Nutricost, Organic Spirulina, 500 mg, 240 Tablets
Nutricost, Organic Spirulina, 500 mg, 240 Tablets
Nutricost
500 mg24012.950.108View on iHerb →
3
Nutricost, Spirulina, 180 Capsules (500 mg per Capsule)
Nutricost, Spirulina, 180 Capsules (500 mg per Capsule)
Nutricost
3,000 mg3014.950.166View on iHerb →
4
Life Extension, X-R Shield, 90 Vegetarian Capsules
Life Extension, X-R Shield, 90 Vegetarian Capsules
Life Extension
1,335 mg309.000.225View on iHerb →
5
Swolverine, Greens + Reds, Natural Orange, 16.08 oz (456 g)
Swolverine, Greens + Reds, Natural Orange, 16.08 oz (456 g)
Swolverine
2,500 mg3047.990.640View on iHerb →
6
Pure Essence, EnergyPlus™, 120 Tablets
Pure Essence, EnergyPlus™, 120 Tablets
Pure Essence
1,000 mg6044.520.742View on iHerb →
7
Pure Planet, Organic Amla Plus, 100 Tablets
Pure Planet, Organic Amla Plus, 100 Tablets
Pure Planet
1,000 mg109.920.992View on iHerb →
8
MRM Nutrition, Organic Detox & Cleanse Powder, Peach Mango, 4.2 oz (120 g)
MRM Nutrition, Organic Detox & Cleanse Powder, Peach Mango, 4.2 oz (120 g)
MRM Nutrition
1,250 mg1519.991.07View on iHerb →
9
NATURELO, Vegan B12 Infused with Spirulina, 90 Easy Swallow Capsules
NATURELO, Vegan B12 Infused with Spirulina, 90 Easy Swallow Capsules
NATURELO
200 mg9019.951.11View on iHerb →
10
Zhou Nutrition, Total Greens, 120 Tablets
Zhou Nutrition, Total Greens, 120 Tablets
Zhou Nutrition
600 mg3021.191.18View on iHerb →
11
NOW Foods, Special Two, Multi Vitamin, 240 Veg Capsules
NOW Foods, Special Two, Multi Vitamin, 240 Veg Capsules
NOW Foods
400 mg6034.291.43View on iHerb →
12
NOW Foods, Special Two, Multi Vitamin, 120 Veg Capsules
NOW Foods, Special Two, Multi Vitamin, 120 Veg Capsules
NOW Foods
400 mg3018.361.53View on iHerb →
13
NOW Foods, EcoGreen Multi, Iron-Free, 180 Veg Capsules
NOW Foods, EcoGreen Multi, Iron-Free, 180 Veg Capsules
NOW Foods
125 mg9029.392.61View on iHerb →
14
MaryRuth's, Spirulina Gummies, Strawberry Lemonade, 90 Gummies
MaryRuth's, Spirulina Gummies, Strawberry Lemonade, 90 Gummies
MaryRuth's
300 mg3024.952.77View on iHerb →
15
Natural Factors, Whole Earth & Sea®, Organic Greens, Unflavored, 6.9 oz (195 g)
Natural Factors, Whole Earth & Sea®, Organic Greens, Unflavored, 6.9 oz (195 g)
Natural Factors
500 mg1523.963.19View on iHerb →
16
Paradise Herbs, ORAC Energy® Greens, 120 Vegetarian Capsules
Paradise Herbs, ORAC Energy® Greens, 120 Vegetarian Capsules
Paradise Herbs
625 mg1529.993.20View on iHerb →
17
Viva Naturals, Organic Hair + Skin & Nails, 120 Tablets
Viva Naturals, Organic Hair + Skin & Nails, 120 Tablets
Viva Naturals
100 mg6021.073.51View on iHerb →
18
Bucked Up, Babe, Organic Greens, Orange Sunrise, 11.75 oz (333 g)
Bucked Up, Babe, Organic Greens, Orange Sunrise, 11.75 oz (333 g)
Bucked Up
300 mg3034.953.88View on iHerb →
19
Paradise Herbs, Protein & Greens, Vanilla, 16 oz (454 g)
Paradise Herbs, Protein & Greens, Vanilla, 16 oz (454 g)
Paradise Herbs
625 mg1434.994.00View on iHerb →
20
Rainbow Light, Menopause One™+, 90 Tablets
Rainbow Light, Menopause One™+, 90 Tablets
Rainbow Light
75 mg9028.044.15View on iHerb →
21
Protocol for Life Balance, Ortho Multi™ Greens, 180 Veg Capsules
Protocol for Life Balance, Ortho Multi™ Greens, 180 Veg Capsules
Protocol for Life Balance
125 mg9049.004.36View on iHerb →
22
Bucked Up, Organic Greens, Unflavored, 9.52 oz (270 g)
Bucked Up, Organic Greens, Unflavored, 9.52 oz (270 g)
Bucked Up
300 mg3039.954.44View on iHerb →
23
Bucked Up, Organic Greens, Mixed Berry, 11.17 oz (316.8 g)
Bucked Up, Organic Greens, Mixed Berry, 11.17 oz (316.8 g)
Bucked Up
300 mg3039.954.44View on iHerb →
24
KAL, Multivitamin, Morning & Evening, 2 Pack, 60 Tablets Each
KAL, Multivitamin, Morning & Evening, 2 Pack, 60 Tablets Each
KAL
150 mg3032.897.31View on iHerb →
25
Oat Mama, You Got This Lactation Blend, 60 Vegetarian Capsules
Oat Mama, You Got This Lactation Blend, 60 Vegetarian Capsules
Oat Mama
100 mg3024.008.00View on iHerb →

How we rank Organic Spirulina

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.

← Browse all nutrients

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.