PlainVitamins

Spirulina Powder

by Source Naturals · powder · 8 ozs

  • On the market (NIH)
  • UPC 0 21078 00636 7
  • DSLD label 77481
  • Serving 2 tsp (approx. 6 g)
  • 37 servings

Spirulina Powder by Source Naturals lists 3 ingredients, 3 with an amount per serving of 2 tsp, such as 6 g of spirulina, beside 3 Nutrition Facts rows (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on August 22, 2017.

What is in Spirulina Powder?

Each row as the label prints it, per serving of 2 tsp. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Spirulina Powder: Supplement Facts rows against the market (DSLD label 77481, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories25 Calories
Total Carbohydrates1 g1%Carbohydrate in Spirulina Powder against 21,979 products1 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.1 g

74% of 21,979 products listing carbohydrate give more (median 3 g).

Protein3 g6%Protein in Spirulina Powder against 8,985 products3 g per serving; the middle half of products list 2 g to 24 g, the median 16 g.3 g

67% of 8,985 products listing protein give more (median 16 g).

Sodium20 mg1%Sodium in Spirulina Powder against 14,514 products20 mg per serving; the middle half of products list 15 mg to 142 mg, the median 55 mg.20 mg

67% of 14,514 products listing sodium give more (median 55 mg).

SpirulinaSpirulina Genus: Arthrospira Species: platensis Note: yielding approximately6 gBlue-Green Algae in Spirulina Powder against 709 products6,000 mg per serving; the middle half of products list 100 mg to 1,000 mg, the median 500 mg.6,000 mg

Higher than 99% of 709 products listing blue-green algae (median 500 mg).

Vitamin Aas Beta-CaroteneVitamin A (Form: as Beta-Carotene)5,000 IU100%Vitamin A in Spirulina Powder against 5,772 products5,000 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.5,000 IU

Higher than 55% of 5,772 products listing vitamin A (median 4,000 IU).

Iron1.7 mg9%Iron in Spirulina Powder against 6,910 products1.7 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg1.7 mg

71% of 6,910 products listing iron give more (median 5 mg).

Source: NIH ODS Dietary Supplement Label Database, label 77481 (entered August 22, 2017), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 6,000 mg of spirulina (filed by NIH under blue-green algae) is higher than 99% of the 709 blue-green algae products that print an amount; 8 list more.

The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

4 products list the very same ingredients; the nearest amounts come first.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Use: Use 2 teaspoons daily mixed in water or juice, or add to soup, pasta, etc., after cooking.
Warnings
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.
Allergens and what it does not contain
Suitable For Vegetarians And Hypoallergenic: Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, preservatives, or artificial color, flavor or fragrance.
Non GMO Validated
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 77481.

How many labels does Spirulina Powder have?

3 labels are on file under this name since August 22, 2017: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 77481 (current) Entered August 22, 2017 · on the market · 8 ozs · UPC 0 21078 00636 7
  2. Label 77478 Entered August 22, 2017 · on the market · 4 ozs · UPC 0 21078 00635 0
  3. Label 75426 Entered August 22, 2017 · on the market · 16 ozs · UPC 0 21078 00640 4

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?