PlainVitamins

Blue-Green Algae 500 mg

by Source Naturals · tablet or pill · 50 tablets

  • On the market (NIH)
  • UPC 0 21078 00171 3
  • DSLD label 295604
  • Serving 2 tablets
  • 25 servings

Blue-Green Algae 500 mg by Source Naturals lists 8 ingredients, 8 with an amount per serving of 2 tablets, such as 1 g of blue-green algae, freeze-dried, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.

What is in Blue-Green Algae 500 mg?

Each row as the label prints it, per serving of 2 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).

Blue-Green Algae 500 mg: Supplement Facts rows against the market (DSLD label 295604, January 2026 release)
IngredientAmount% DVAmong products listing it
Protein1 g2%Protein in Blue-Green Algae 500 mg against 8,985 products1 g per serving; the middle half of products list 2 g to 24 g, the median 16 g.1 g

77% of 8,985 products listing protein give more (median 16 g).

Blue-Green Algae, Freeze-DriedYielding approximately: This list represents a typical yield. Each lot may vary slightly.1 gBlue-Green Algae in Blue-Green Algae 500 mg against 709 products1,000 mg per serving; the middle half of products list 100 mg to 1,000 mg, the median 500 mg.1,000 mg

Higher than 69% of 709 products listing blue-green algae (median 500 mg).

Vitamin Aas Beta-Carotene500 IU10%Vitamin A in Blue-Green Algae 500 mg against 5,772 products500 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.500 IU

91% of 5,772 products listing vitamin A give more (median 4,000 IU).

Niacin3.5 mg18%Niacin in Blue-Green Algae 500 mg against 12,413 products3.5 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg3.5 mg

95% of 12,413 products listing niacin give more (median 20 mg).

Vitamin B120.25 mcg4%Vitamin B12 in Blue-Green Algae 500 mg against 14,425 products0.25 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg0.25 mcg

over 99% of 14,425 products listing vitamin B12 give more (median 36 mcg).

Iron400 mcg2%Iron in Blue-Green Algae 500 mg against 6,910 products0.4 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg0.4 mg

92% of 6,910 products listing iron give more (median 5 mg).

Phosphorus7 mg1%Phosphorus in Blue-Green Algae 500 mg against 3,786 products7 mg per serving; the middle half of products list 45 mg to 200 mg, the median 90 mg.DV 1,250 mgUL 4,000 mg7 mg

98% of 3,786 products listing phosphorus give more (median 90 mg).

Manganese22 mcg1%Manganese in Blue-Green Algae 500 mg against 7,016 products0.022 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg0.022 mg

over 99% of 7,016 products listing manganese give more (median 2 mg).

Molybdenum40 mcg53%Molybdenum in Blue-Green Algae 500 mg against 4,390 products40 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg40 mcg

63% of 4,390 products listing molybdenum give more (median 50 mcg).

Source: NIH ODS Dietary Supplement Label Database, label 295604 (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:

  • 91% of the 5,772 products that print an amount of vitamin A list more than its 500 IU of vitamin A (median 4,000 IU).
  • 95% of the 12,413 products that print an amount of niacin list more than its 3.5 mg of niacin (median 20 mg).
  • over 99% of the 14,425 products that print an amount of vitamin B12 list more than its 0.25 mcg of vitamin B12 (median 36 mcg).
  • 92% of the 6,910 products that print an amount of iron list more than its 0.4 mg of iron (median 5 mg).
  • 98% of the 3,786 products that print an amount of phosphorus list more than its 7 mg of phosphorus (median 90 mg).
  • over 99% of the 7,016 products that print an amount of manganese list more than its 0.022 mg of manganese (median 2 mg).

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?

The products whose ingredient lists overlap most with Blue-Green Algae 500 mg's, rare ingredients counting for more.

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: 2 tablets daily, preferably on an empty stomach.
Warnings
Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Allergens and what it does not contain
Contains no diary, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservations, or artificial color, flavor or fragrance.

Source: label statements in DSLD label 295604.

What else is on the label?

Other ingredients: Silicon Dioxide, Colloidal, Modified Cellulose Gum, Stearic Acid.

How many labels does Blue-Green Algae 500 mg have?

5 labels are on file under this name since June 23, 2017: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 295604 (current) Entered August 23, 2023 · on the market · 50 tablets · UPC 0 21078 00171 3
  2. Label 272441 Entered September 22, 2022 · on the market · 200 tablets · UPC 0 21078 00173 7
  3. Label 211628 Entered December 22, 2019 · off the market December 22, 2021 · 200 tablets · UPC 0 21078 00173 7
  4. Label 75389 Entered June 23, 2017 · on the market · 100 tablets · UPC 0 21078 00172 0
  5. Label 75387 Entered June 23, 2017 · off the market July 6, 2022 · 50 tablets · UPC 0 21078 00171 3

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?