PlainVitamins

Spirulina

by Purium · capsule · 180 capsules

  • On the market (NIH)
  • UPC 7 64934 02433 3
  • DSLD label 296271
  • Serving 6 to 18 capsules; amounts per 6 capsules
  • 30 servings

Spirulina by Purium lists one ingredient: 3,600 mg of spirulina per serving of 6 capsules. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.

What is in Spirulina?

Each row as the label prints it, per serving of 6 capsules. 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: Supplement Facts rows against the market (DSLD label 296271, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories15 Calories
Total Carbohydrates1 g1%Carbohydrate in Spirulina 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).

Protein2 gProtein in Spirulina against 8,985 products2 g per serving; the middle half of products list 2 g to 24 g, the median 16 g.2 g

70% of 8,985 products listing protein give more (median 16 g).

SpirulinaOrganic3,600 mgBlue-Green Algae in Spirulina against 709 products3,600 mg per serving; the middle half of products list 100 mg to 1,000 mg, the median 500 mg.3,600 mg

Higher than 97% of 709 products listing blue-green algae (median 500 mg).

Source: NIH ODS Dietary Supplement Label Database, label 296271 (entered August 23, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). 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 3,600 mg of spirulina (filed by NIH under blue-green algae) is higher than 97% of the 709 blue-green algae products that print an amount; 16 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?

5 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: Take 6-18 capsules daily.
Warnings
Caution: Keep out of reach of children.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 296271.

What else is on the label?

Other ingredients: Vegetarian Capsule.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): OK (Kosher).

How many labels does Spirulina have?

2 labels are on file under this name since March 24, 2020: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 296271 (current) Entered August 23, 2023 · on the market · 180 capsules · UPC 7 64934 02433 3
  2. Label 215071 Entered March 24, 2020 · off the market August 12, 2022 · 180 capsules · UPC 7 64934 02433 3

DSLD also links this label to: Spirulina (image difference, same product), Spirulina (image difference, same product).

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

Who makes it?

The label names Purium (manufacturer, distributor), Rancho Dominguez, CA. All Purium products.

Where next?