botanical

Blue-Green Algae supplements

Half of the 709 blue-green algae supplements in the NIH label database that print an amount list 500 mg or less per serving; the middle half list 100 mg to 1,000 mg (DSLD version 9.4.0, January 2026). The 90 products whose only supplement ingredient is blue-green algae list a median of 760 mg.

Products listing it: 1,937709 print an amount; 1,227 list it inside a blend without an amount
Median per serving: 500 mgmiddle half 100 mg to 1,000 mg

How much blue-green algae do supplements contain?

The median product lists 500 mg per serving. One in ten lists 25 mg or less, one in ten 2,000 mg or more. The amount printed most often is 1,000 mg (97 products).

Products by amount of blue-green algae per serving

709 products, log scale; extreme 0.2% at each end left out of the drawing.

The amounts printed most often
Amount per serving	Products	For example
1,000 mg	97	Super Greens Power (MET-Rx); Life Multi Complete (VitaCeutical Labs); All Day Energy Green Zing (IVL Institute for Vibrant Living)
500 mg	93	Klamath Lake Blue Green Algae (Vitamin World); LifeEssence (Pure Essence Labs); Longevity Women's Formula (Pure Essence Labs)
100 mg	52	Nails (Viva Vitamins); One 'N' Only Men's Formula (Pure Essence Labs); Detoxitech Heavy Metal Chelator (Natural Factors)
50 mg	45	Week Four: Repair (Douglas Laboratories); Herbplex (Douglas Laboratories); Bone Health Pack (Douglas Laboratories)
3,000 mg	43	Spirulina Organic Tablets (Earthrise); Spirulina Green Food Supplement (Herbal Hills); Pure Spirulina (Algae Pratensis) Powder (Hard Rhino)
250 mg	40	Special Two (Vitabase); Life's Essentials Plus (Vitabase); ProJoba Super Daily (ProJoba International)
20 mg	24	Prenatal Multi (365 Everyday Value); Active 50+ Once Daily Multivitamin & Mineral Plus Probiotics (Digestive Support) (Trader Joe's); Calcium, Magnesium + Vitamin D (Trader Joe's)
200 mg	18	Spirulina Multiple (Source Naturals); Jugo Verde Natural Pineapple-Lime Flavor (Convida. Powered by Vibrant Health); Apple Cider Vinegar with Spirulina & Kelp 700 mg (Zenwise Health)
2,000 mg	18	Blue-Green Algae 500 mg (NOW); Bio-Logical Super Whey Chocolate Berry (Precision Engineered); Re-Peak Lemon-Lime (NorthBound Nutrition)
300 mg	17	Brain 4 Way Support System (Pure Essence Labs); The Optimal Blend Detoxify Complex (OL Olympian Labs The Optimal Blend); The Ultimate Anti Oxidant Formula (Natrol)

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most blue-green algae?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

Spirulina Powder (California Grown)BulkSupplements.com9,000 mg
Spirulina PowderBulkSupplements.com9,000 mg
Spirulina 8 gNutricost8,000 mg
Spirulina PowderVitamin World7,000 mg
100% Natural Hawaiian Spirulina PowderNOW7,000 mg
Spirulina PowderPureBulk.com7,000 mg
Spirulina PowderPuritan's Pride7,000 mg
Spirulina PowderSource Naturals6,000 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 500 mg; those entered in 2025, 410 mg.

Median blue-green algae per serving by the year the label entered DSLD (years with 20+ products)
Year	Products	Median per serving
2011	23	500 mg
2012	52	250 mg
2013	45	150 mg
2014	23	100 mg
2015	47	125 mg
2016	32	275 mg
2017	46	500 mg
2018	32	823.5 mg
2019	40	400 mg
2020	53	500 mg
2021	61	500 mg
2022	68	500 mg
2023	66	500 mg
2024	66	500 mg
2025	55	410 mg

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing blue-green algae by DSLD product type

Brands listing it most: Rainbow Light (30), Vibrant Health (30), Douglas Laboratories (24), Nature's Plus (20), NOW (14), Nutrex Hawaii (11), Source Naturals (9), Swanson (9), Swanson GreenFoods Formulas (9), Natures Plus Source of Life (8).

Every product listing blue-green algae

1,937 products, A to Z by name (page 31 of 39), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

Spirulina 4000 mgSuperSmart · off the market4,000 mg
Spirulina 410 mgSolaray410 mg
Spirulina 500MaritzMayer Laboratories · off the market500 mg
Spirulina 500 mgVitabase500 mg
Spirulina 500 mgVitamin World1,500 mg
Spirulina 500 mgSimply Supplements · off the market500 mg
Spirulina 500 mgSwanson GreenFoods Formulas · off the market1,000 mg
Spirulina 500 mgBIOVEA500 mg
Spirulina 500 mgMountain Meadow Herbs2,000 mg
Spirulina 500 mgAmazing Indiain a blend
Spirulina 500 mgWonder Laboratories500 mg
Spirulina 500 mgSunshine Naturals · off the market500 mg
Spirulina 500 mgMeijer500 mg
Spirulina 500 mgSource Naturals3,000 mg
Spirulina 500 mgHerbal Secrets · off the market2,000 mg
Spirulina 500 mgPuritan's Pride1,500 mg
Spirulina 500 mgSwanson500 mg
Spirulina 500 mg Blue-Green AlgaeGood 'N Natural · off the market1,500 mg
Spirulina 500 mg CapsulesBulkSupplements.com500 mg
Spirulina 500 mg TabletsHealth Ranger Select3,000 mg
Spirulina 750 mgSolgar3,000 mg
Spirulina 8 gNutricost8,000 mg
Spirulina And ChlorellaOnnit1,000 mg
Spirulina AstaBlue ComplexCalifornia Gold Nutritionin a blend
Spirulina AztecaHealthForce · off the marketin a blend
Spirulina Blue Green Algae 500 mgCHK Nutrition500 mg
Spirulina Blue Green Algae 500 mgVitamin Discount Center · off the market500 mg
Spirulina Blue-Green Algae 500 mgVitamin World · off the market1,500 mg
Spirulina ChlorellaNutrifect Nutrition · off the market1,000 mg
Spirulina ChlorellaVimerson Health400 mg
Spirulina Gold PlusEarthrise3,000 mg
Spirulina Green Food SupplementHerbal Hills3,000 mg
Spirulina MannaHealthForce SuperFoodsin a blend
Spirulina Micro-AlgaeNature's Way · off the market760 mg
Spirulina Micro-Algae 380 mgNature's Way · off the market760 mg
Spirulina Micro-Algae 760 mgNature's Way760 mg
Spirulina MultipleSource Naturals200 mg
Spirulina Natural Blue Green Algae 500 mgMartin Avenue Pharmacy500 mg
Spirulina Natural CapsulesEarthrise3,000 mg
Spirulina Natural PowderEarthrise3,000 mg
Spirulina Natural TabletsEarthrise6,000 mg
Spirulina Organic 500 mgBIOVEA500 mg
Spirulina Organic TabletsEarthrise3,000 mg
Spirulina Plant Plankton 750 mgSolgar · off the market3,000 mg
Spirulina PlusIndiana Botanic Gardens · off the market1,000 mg
Spirulina Plus 500 mgIndiana Botanic Gardens1,000 mg
Spirulina PowderVitamin World7,000 mg
Spirulina PowderPureBulk.com7,000 mg
Spirulina PowderBIOVEA Natural Foodsin a blend
Spirulina PowderSource Naturals6,000 mg