PlainVitamins

Kelp Powder

by NOW · powder · 8 oz.

  • Off the market since August 2012 (NIH)
  • UPC 7 33739 02676 7
  • DSLD label 12752
  • Serving 0.25 tsp (485 mg)
  • 468 servings

Kelp Powder by NOW lists 3 ingredients, 3 with an amount per serving of 0.25 tsp, such as 485 mcg of iodine, 10 mg of potassium and 485 mg of kelp, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on August 24, 2012.

What is in Kelp Powder?

Each row as the label prints it, per serving of 0.25 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).

Kelp Powder: Supplement Facts rows against the market (DSLD label 12752, January 2026 release)
IngredientAmount% DVAmong products listing it
Sodium15 mg1%Sodium in Kelp Powder against 14,514 products15 mg per serving; the middle half of products list 15 mg to 142 mg, the median 55 mg.15 mg

72% of 14,514 products listing sodium give more (median 55 mg). Per day at the most servings: 45 mg.

Iodine485 mcg323%Iodine in Kelp Powder against 6,382 products485 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg485 mcg

Higher than 97% of 6,382 products listing iodine (median 150 mcg). Per day at the most servings: 1,455 mcg. 1.3 times the adult UL a day.

Potassium10 mg1%Potassium in Kelp Powder against 11,614 products10 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg10 mg

93% of 11,614 products listing potassium give more (median 99 mg). Per day at the most servings: 30 mg.

Kelp485 mgAscophyllum nodosum in Kelp Powder against 54 products485 mg per serving; the middle half of products list 50 mg to 300 mg, the median 100 mg.485 mg

Higher than 80% of 54 products listing ascophyllum nodosum (median 100 mg). Per day at the most servings: 1,455 mg.

Source: NIH ODS Dietary Supplement Label Database, label 12752 (entered August 24, 2012), 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:

  • At 3 servings a day, the most its directions give, the label lists 1,455 mcg of iodine, 1.3 times the adult Tolerable Upper Intake Level.
  • 93% of the 11,614 products that print an amount of potassium list more than its 10 mg of potassium (median 99 mg).

The NIH database records 1 to 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?

The products whose ingredient lists overlap most with Kelp Powder'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 USAGE: As a dietary supplement, take 1/4 level teaspoon 1 to 3 times daily, preferably with meals.
Allergens and what it does not contain
Contains no starch, sugar, yeast, wheat, gluten, corn, egg, soy, milk, preservatives, chemical additives or artificial colors.

Source: label statements in DSLD label 12752.

What else is on the label?

Other ingredients: None.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Good Manufacture Practices GMP NNfA.

How many labels does Kelp Powder have?

One label is on file, entered on August 24, 2012.

  1. Label 12752 (current) Entered August 24, 2012 · off the market August 9, 2012 · 8 oz. · UPC 7 33739 02676 7

DSLD also links this label to: Kelp (image difference, same product), Kelp (image difference, same product), Organic Kelp (image difference, same product), Kelp (image difference, same product), Organic Kelp (image difference, same product), Organic Kelp (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 NOW FOODS (manufacturer), BLOOMINGDALE, IL. All NOW products.

Where next?