Spirulina 500 mg

by Puritan's Pride · tablet or pill · 100 tablets

On the market (NIH)
UPC 0 25077 03286 0
DSLD label 285664
Serving 3 tablets
33 servings

Spirulina 500 mg by Puritan's Pride lists one ingredient: 1,500 mg of spirulina per serving of 3 tablets. Its current label entered the NIH Dietary Supplement Label Database on May 24, 2023.

What is in Spirulina 500 mg?

Each row as the label prints it, per serving of 3 tablets. 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 500 mg: Supplement Facts rows against the market (DSLD label 285664, January 2026 release)
Ingredient	Amount	% DV	Among products listing it
Spirulinaas Arthrospira platensis1.5 g	1,500 mg		Higher than 85% of 709 products listing blue-green algae (median 500 mg). Per day at the most servings: 4,500 mg.
Sodium Copper Chlorophyllin	10.5 mg		78% of 14,514 products listing sodium give more (median 55 mg). Per day at the most servings: 31.5 mg.

Source: NIH ODS Dietary Supplement Label Database, label 285664 (entered May 24, 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

The NIH database records 3 servings 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?

1 product lists the very same ingredients; the nearest amounts come first.

SpirulinaSpring Valley same ingredients
Spirulina Micro-AlgaeNature's Way · off the market 2 shared, 71% alike
Spirulina Micro-Algae 380 mgNature's Way · off the market 2 shared, 71% alike
Klamath Lake Blue Green AlgaeVitamin World 1 shared, 67% alike
Stem EnhanceStemTech · off the market 1 shared, 67% alike
Blue Green Algae 500 mgPhysioLogics · off the market 1 shared, 67% alike

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: Directions: For adults, take three (3) tablets three times daily, preferably with meals.
Warnings: Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.; Discontinue use and consult your doctor if any adverse reactions occur.; Keep out of reach of children.; Do not use if seal under cap is broken or missing.
Allergens and what it does not contain: No artificial color, flavor or sweetener, no preservatives, no sugar, no starch, no milk, no lactose, no soy, no gluten, no wheat, no yeast, no fish.
Storage: Store at room temperature.

Source: label statements in DSLD label 285664.

What else is on the label?

Other ingredients: Povidone, Cellulose, Silica, Dicalcium Phosphate, Magnesium Stearate.

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

How many labels does Spirulina 500 mg have?

One label is on file, entered on May 24, 2023.

Label 285664 (current) Entered May 24, 2023 · on the market · 100 tablets · UPC 0 25077 03286 0

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

Who makes it?

The label names Puritan's Pride, Inc. (manufacturer), Holbrook, NY, U.S.A.. All Puritan's Pride products.