Spirulina 500 mg by Source Naturals — 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

6 Tablet(s) Serving Size

83 Servings

Other Combinations Product Type

0% Evidence Coverage

Supplement Facts — Evidence Check

Calories

10 Calorie(s)

Total Carbohydrates

1 Gram(s) (1% DV)

Protein

2 Gram(s) (4% DV)

Vitamin A

509 mcg (57% DV)

Iron

850 mcg (4% DV)

Sodium

35 mg (1% DV)

Spirulina

3 Gram(s)

📊 Market median: 200.0mg (107 products)

Median 200.0mg This product: 3mg

Other Ingredients

modified Cellulose Gum Silica Stearic Acid

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

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

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Suggested Use: 6 tablets daily with meals.

⚠️ Warnings & Precautions

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children.

Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

🧪 Formulation Notes

For over 30 years, spirulina (Arthrospira platensis) has been the premier choice for supplementing a vegetarian diet. Source Naturals Spirulina is one of the highest quality available. Preliminary research suggests that spirulina, a blue-green algae, supports the immune system and healthy circulation. It is a high quality protein, which contains all nine essential amino acids.

Suitable for vegans and vegetarians.

Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, preservatives, or artificial color, flavor or fragrance.

Non GMO Validated

Additional Information

Store in a cool, dry place.

Non GMO Validated

Product Details

UPC / SKU 0 21078 00639 8

DSLD Entry Date 2022-08-23

Product Type Other Combinations

Form Tablet or Pill

Brand Source Naturals

DSLD ID 272840

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 →