Spirulina Plus

by Indiana Botanic Gardens · tablet or pill · 120 tablets

  • Off the market since June 2015 (NIH)
  • UPC 7 03308 03016 7
  • DSLD label 3973
  • Serving 2 tablets
  • 60 servings

Spirulina Plus by Indiana Botanic Gardens lists 8 ingredients, 8 with an amount per serving of 2 tablets, such as 1,600 IU of vitamin A, 20 mcg of vitamin K, 2 mcg of vitamin B12 and 36 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on December 23, 2011.

What is in Spirulina Plus?

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).

Spirulina Plus: Supplement Facts rows against the market (DSLD label 3973, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Beta-CaroteneVitamin A (Form: as Beta Carotene)1,600 IU32%Vitamin A in Spirulina Plus against 5,772 products1,600 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.1,600 IU

78% of 5,772 products listing vitamin A give more (median 4,000 IU). Per day at the most servings: 3,200 IU.

Vitamin KVitamin K Note: naturally occurring20 mcg26%Vitamin K in Spirulina Plus against 4,607 products20 mcg per serving; the middle half of products list 35 mcg to 100 mcg, the median 80 mcg.DV 120 mcg20 mcg

87% of 4,607 products listing vitamin K give more (median 80 mcg). Per day at the most servings: 40 mcg.

Vitamin B12Vitamin B-12 Note: naturally occurring2 mcg34%Vitamin B12 in Spirulina Plus against 14,425 products2 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg2 mcg

93% of 14,425 products listing vitamin B12 give more (median 36 mcg). Per day at the most servings: 4 mcg.

Calciumas Dicalcium PhosphateCalcium (Form: as Dicalcium Phosphate)36 mg4%Calcium in Spirulina Plus against 17,831 products36 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg36 mg

82% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 72 mg.

IronIron Note: naturally occurring1 mg6%Iron in Spirulina Plus against 6,910 products1 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg1 mg

76% of 6,910 products listing iron give more (median 5 mg). Per day at the most servings: 2 mg.

Phosphorusas Dicalcium PhosphatePhosphorus (Form: as Dicalcium Phosphate)30 mg4%Phosphorus in Spirulina Plus against 3,786 products30 mg per serving; the middle half of products list 45 mg to 200 mg, the median 90 mg.DV 1,250 mgUL 4,000 mg30 mg

84% of 3,786 products listing phosphorus give more (median 90 mg). Per day at the most servings: 60 mg.

SeleniumSelenium Note: naturally occurring1 mcg4%Selenium in Spirulina Plus against 7,658 products1 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg1 mcg

over 99% of 7,658 products listing selenium give more (median 55 mcg). Per day at the most servings: 2 mcg.

SpirulinaSpirulina PlantPart: microalgae Genus: Arthrospira Species: platensis Note: a naturally rich source of vitamins, minerals, chlorophyll, superoxide dismutase, and carotenoids including phycocyanin, zeaxanthin and lutein.1 gBlue-Green Algae in Spirulina Plus 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). Per day at the most servings: 2,000 mg.

Source: NIH ODS Dietary Supplement Label Database, label 3973 (entered December 23, 2011), 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:

  • 87% of the 4,607 products that print an amount of vitamin K list more than its 20 mcg of vitamin K (median 80 mcg).
  • 93% of the 14,425 products that print an amount of vitamin B12 list more than its 2 mcg of vitamin B12 (median 36 mcg).
  • over 99% of the 7,658 products that print an amount of selenium list more than its 1 mcg of selenium (median 55 mcg).

The NIH database records 2 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?

The products whose ingredient lists overlap most with Spirulina Plus'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: Take 2 tablets twice daily, preferably with meals, as a dietary supplement, or as directed by a physician.
Warnings
KEEP OUT OF REACH OF CHILDREN
Warning: If you are taking any medications or are pregnant or nursing do not use prior to consulting a physician.
For your protection, this container has an outer safety seal. (Do not accept if missing or broken.)
Storage
Best if used by date on bottle. Store in a dry, cool place.

Source: label statements in DSLD label 3973.

What else is on the label?

Other ingredients: Dicalcium Phosphate, Stearic Acid, Aqueous Film Coating, Magnesium Stearate, Croscarmellose Sodium, Silicon Dioxide.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): IBG INDIANA BOTANIC GARDENS(R).

How many labels does Spirulina Plus have?

One label is on file, entered on December 23, 2011.

  1. Label 3973 (current) Entered December 23, 2011 · off the market June 5, 2015 · 120 tablets · UPC 7 03308 03016 7

DSLD also links this label to: Spirulina Plus 500 mg (image difference, same product), Spirulina Plus 500 mg (image difference, same product), Spirulina Plus 500 mg (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 Indiana Botanic Gardens, Inc. (distributor), Hobart, IN. All Indiana Botanic Gardens products.

Where next?