Blue-Green Algae 500 mg by NOW — Ingredients, Evidence & Safety

🟢 100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
Limited research evidence available for ingredients

B Label Compliance Grade

Product Label

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Label Data

2 Vegetarian Capsule(s) Serving Size

45 Servings

Botanical Product Type

0% Evidence Coverage

Supplement Facts — Evidence Check

Calories

5 {Calories}

Protein

1 g (2% DV)

Vitamin A

560 IU (11% DV)

Iron

0.7 mg (4% DV)

Blue Green Algae

2 g

Other Ingredients

Cellulose Magnesium Stearate

Label Claims — Verification

❓ All Other

All Other (98% of products) Structure/Function (82% of products) Nutrient (38% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years)

Product Information

📋 Directions for Use

SUGGESTED USAGE: As a dietary supplement, take 2 to 4 capsules daily. Start with a smaller amount and gradually increase dosage over several weeks. Consider taking these other NOW(R) products: Energy, Detox Support(TM) and Triphala.

⚠️ Warnings & Precautions

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Keep out of reach of children.

🧪 Formulation Notes

Vegetarian/Vegan

Additional Information

Blue-Green Algae is a unique superfood harvested from the pristine Upper Klamath Lake in the Oregon Cascades. This nutrient-dense, freeze-dried, whole food concentrate has naturally occurring minerals, vitamins, protein and chlorophyll.

CAPSULE SIZE Made in the USA

Genuine Whole Food

GREEN SUPERFOOD

Wildcrafted from Klamath Lake

GMP QUALITY ASSURED

For more product information visit www.nowfoods.com/2624

Natural color variations may occur in this product.

Store in a cool, dry place after opening.

Please Recycle.

CODE 2624 V3

Product Details

UPC / SKU 7 33739 02624 8

DSLD Entry Date 2012-10-01

Product Type Botanical

Form Capsule

Brand NOW

DSLD ID 13784

Data Updated 2026-04-11

Research Evidence

10 Research Sources

51 Avg Quality Score

3 Meta Analysis

3 Rct

2 Systematic Review

2 Clinical Trial

B The effect of Spirulina supplementation on lipid profile: GRADE-assessed systematic review and dose-response meta-analysis of data from randomized controlled trials

Meta Analysis Pharmacological research 2023

PubMed DOI

B A systematic review and meta-analysis of the impact of Spirulina supplementation on plasma lipid concentrations

Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2016

PubMed DOI

B Potential benefits of microalgae intake against metabolic diseases: beyond spirulina-a systematic review of animal studies

Systematic Review Nutrition reviews 2024

PubMed DOI

C The effects of Spirulina supplementation on metabolic syndrome components, its liver manifestation and related inflammatory markers: A systematic review

Systematic Review Complementary therapies in medicine 2019

PubMed DOI

C The effects of spirulina on glycemic control and serum lipoproteins in patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized controlled trials

Meta Analysis Phytotherapy research : PTR 2019

PubMed DOI

C The effects of spirulina intake on clinical and metabolic parameters in Alzheimer's disease: A randomized, double-blind, controlled trial

Rct Phytotherapy research : PTR 2023

PubMed DOI

C Antioxidant Efficacy of a Spirulina Liquid Extract on Oxidative Stress Status and Metabolic Disturbances in Subjects with Metabolic Syndrome.

Rct Marine drugs

PubMed DOI

C Combined high-intensity interval training and spirulina supplementation synergistically improve inflammatory and lipid-associated biomarkers in men with obesity.

Rct Nutrition research (New York, N.Y.)

PubMed DOI

C The Effects of Spirulina Platensis on Insulin Resistance in HIV-infected Patients

Clinical Trial ClinicalTrials.gov 2008

ClinicalTrials.gov

C Carbon-13 (13C)-Spirulina Platensis Gastric Emptying Breath Test (GEBT)

Clinical Trial ClinicalTrials.gov 2010

ClinicalTrials.gov

View all evidence for Spirulina →