Spirulina is a blue-green algae sold as a powder or tablets. It's about 60-70% protein by weight and contains a mix of vitamins, minerals, and pigments (phycocyanin is the main one that gets marketing attention). Evidence is moderate for two specific outcomes: small reductions in blood pressure and LDL cholesterol at 1-8g/day. The broader claims around energy, detoxification, immunity, and weight loss don't have strong research behind them despite being the main marketing hooks. Two practical things to know. First, a big portion of the market is "greens blends" that mix spirulina with chlorella, wheatgrass, and other ingredients — those aren't included on TrueServing because per-ingredient dosing can't be compared. Second, heavy metal contamination has been a real issue with some spirulina from unregulated sources. Products from brands with third-party testing are worth the small premium. Products below are ranked by cost at your chosen daily dose.
| # | Product | 30-day cost | Supply | Sticker | |
|---|---|---|---|---|---|
| 1 |
Nutricost Organic Spirulina Powder Unflavored, 1LB Container for 454 Servings (3 Bottles) - Vegan, GMO Free and Gluten Free
Nutricost Store
|
$0.86 | 681d | $38.99 | View on Amazon |
| 2 |
Nutricost Organic Spirulina Powder 2 LB - Pure, Certified Organic Spirulina
Nutricost Store
|
$0.99 | 454d | $29.95 | View on Amazon |
| 3 |
Piping Rock Organic Spirulina | 1000mg | 300 Tablets | Arthrospira Platensis | Vegetarian, Non-GMO, Gluten Free Supplement
Piping Rock Store
|
$2.00 | 75d | $9.99 | View on Amazon |
| 4 |
Micro Ingredients Organic Spirulina Powder, 2lb | Blue-Green Algae, Rich in Vegan Protein, Vitamins & Minerals | Source of Natural Chlorophyll & Enzymes | Non-GMO, Gluten-Free, No Additives
Micro Ingredients Store
|
$3.18 | 453d | $31.99 | View on Amazon |
| 5 |
NOW Foods Supplements, Certified Organic, Spirulina 1000 mg (Double Strength), Rich in Beta-Carotene (Vitamin A) and B-12 with naturally occurring GLA , 120 Tablets
NOW Foods Store
|
$3.37 | 60d | $13.46 | View on Amazon |
| 6 |
PURE ORIGINAL INGREDIENTS Spirulina Powder (4 oz) Green Algae Superfood with Phycocyanin
PURE ORIGINAL INGREDIENTS
|
$3.74 | 56d | $6.99 | View on Amazon |
| 7 |
Micro Ingredients Organic Spirulina Powder, 1lb | Blue-Green Algae, Rich in Vegan Protein, Vitamins & Minerals | Source of Natural Chlorophyll & Enzymes | Non-GMO, Gluten-Free, No Additives
Micro Ingredients Store
|
$4.36 | 227d | $21.95 | View on Amazon |
| 8 |
Earthrise Spirulina Natural Powder 32oz, Natural Premium Spirulina from California- Vegan, Gluten Free, Keto Friendly, Non -GMO Super Food high in Vitamins & Minerals. (2 LB)
Earthrise Store
|
$6.40 | 450d | $63.99 | View on Amazon |
| 9 |
Carlyle Organic Spirulina Powder 2.2 lbs | Blue Green Algae | 8g Spirulina per Serving | Vegan, Non-GMO, Gluten Free Supplement
Carlyle Store
|
$8.28 | 500d | $34.49 | View on Amazon |
| 10 |
Organic Spirulina Tablets (360 Tablets) - Made with Parry® Spirulina, The Best Spirulina in the World, Highest Nutrient Density - Non-Irradiated, 3 Organic Certifications (90 Servings)
Triquetra Health Store
|
$9.96 | 90d | $29.89 | View on Amazon |
| 11 |
365 by Whole Foods Market, Organic Spirulina Superfood Powder, 4 Ounce
365 by Whole Foods Market Store
|
$10.26 | 57d | $12.99 | View on Amazon |
| 12 |
BulkSupplements.com Organic Spirulina Powder - Superfood, Green Spirulina Powder, Herbal Supplement - Vegan-Friendly, 3g per Serving, 500g (1.1 lbs) (Pack of 1)
BulkSupplements Store
|
$10.70 | 252d | $19.97 | View on Amazon |
| 13 |
Organic Spirulina Powder – Made with Parry® Spirulina, Known for Superior Purity and Nutrient Density – Vegan Farming – Non-Irradiated – Blue-Green Algae Superfood Supplement – 75 Servings – 8 oz
Triquetra Health Store
|
$10.78 | 113d | $26.95 | View on Amazon |
| 14 |
Nutrex Hawaii Pure Hawaiian Spirulina Powder - Vegan Superfood, Farm Grown in Kona, Non-GMO, Immune Support & Cellular Energy, 5 Oz
Nutrex Hawaii Store
|
$10.84 | 71d | $16.99 | View on Amazon |
| 15 |
EARTHRISE Spirulina Powder 180 Gram, 0.01 Pounds
Earthrise Store
|
$11.99 | 90d | $23.99 | View on Amazon |
| 16 |
Vimergy Spirulina Powder – Concentrated Plant Protein Supports Immune Health & Cardiovascular Function – Vegan, Kosher, Gluten-Free – 250g
Vimergy Store
|
$14.46 | 125d | $40.00 | View on Amazon |
| 17 |
Organic Blue Spirulina Powder (Phycocyanin Extract), 60 Servings - No Fishy Smell, 100% Vegan Protein from Blue-Green Algae, Natural Luminous Food Coloring for Smoothies, Baking, Drinks & Cooking
Micro Ingredients Store
|
$14.50 | 30d | $28.99 | View on Amazon |
| 18 |
Earthrise Superfood 100% California Grown Spirulina 500mg Tablets (180 Count), Natural Premium Spirulina, Vegan, Gluten Free, Keto Friendly, Non -GMO, High in Vitamins & Minerals
Earthrise Store
|
$19.15 | 45d | $19.15 | View on Amazon |
| 19 |
Blue Spirulina Powder - Maximum 35% Phycocyanin Content, Superfood Powder from Blue-Green Algae, Mixes into Smoothies and Protein Drinks, Plant Food Coloring (One Month Supply) by Double Wood
Double Wood Supplements Store
|
$19.95 | 15d | $19.95 | View on Amazon |
| 20 |
USDA Organic Spirulina Tablets - Non-GMO Green Superfood Supplement: 3000mg of Fresh Blue Green Algae, Vegan, Gluten Free, Sustainably Grown, Pesticides Free and Non-Irradiated, 500mg per Tablet, 180'
Natures Wellness Store
|
$19.95 | 45d | $19.95 | View on Amazon |
| 21 |
Organic Blue Spirulina Powder (Phycocyanin Extract), 30 Servings - No Fishy Smell, 100% Vegan Protein from Blue-Green Algae, Natural Luminous Food Coloring for Smoothies, Baking, Drinks & Cooking
Micro Ingredients Store
|
$19.95 | 15d | $19.95 | View on Amazon |
| 22 |
USDA Organic Blue Spirulina Powder (Phycocyanin Extract), No Fishy Smell, 100% Vegan Protein from Blue-Green Algae, 28 Servings, Natural Food Coloring for Smoothies, Baking & Drinks (1 Ounce)
Incas by Asiya Life Store
|
$22.94 | 10d | $15.29 | View on Amazon |
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