PlainVitamins

Kelp

by NOW · tablet or pill · 200 tablets

  • On the market (NIH)
  • UPC 7 33739 02680 4
  • DSLD label 335258
  • Serving 1 tablet
  • 200 servings

Kelp by NOW lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 150 mcg of iodine. Its current label entered the NIH Dietary Supplement Label Database on July 24, 2025.

What is in Kelp?

Each row as the label prints it, per serving of 1 tablet. 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: Supplement Facts rows against the market (DSLD label 335258, January 2026 release)
IngredientAmount% DVAmong products listing it
Iodineelemental150 mcg100%Iodine in Kelp against 6,382 products150 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg150 mcg

15% of 6,382 products listing iodine give more (median 150 mcg).

Kelpas Laminaria spp.organic30 mgKelp in Kelp against 333 products30 mg per serving; the middle half of products list 20 mg to 100 mg, the median 50 mg.30 mg

68% of 333 products listing kelp give more (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 335258 (entered July 24, 2025), 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 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?

6 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 Usage: Take 1 tablet daily with a meal.
Warnings
Caution: For adults only.
Consult physician if pregnant/nursing, taking medication (especially thyroid medications), taking other iodine supplements, or have a medical condition (especially any thyroid disorder).
Keep out of reach of children.
Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Allergens and what it does not contain
Non-GMO
Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.
Storage
Store in a cool, dry place after opening.

Source: label statements in DSLD label 335258.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Hypromellose, Stearic Acid, Sunflower Lecithin, Triethyl Citrate, Sunflower Oil, Ascorbyl Palmitate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Triangle K (Kosher); GMP Quality Assured Crescent H (Halal).

How many labels does Kelp have?

11 labels are on file under this name since October 1, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 335258 (current) Entered July 24, 2025 · on the market · 200 tablets · UPC 7 33739 02680 4
  2. Label 314405 Entered June 20, 2024 · on the market · 200 tablets · UPC 7 33739 02680 4
  3. Label 73590 Entered May 24, 2017 · on the market · 200 tablets · UPC 7 33739 02680 4
  4. Label 73589 Entered April 25, 2017 · on the market · 250 veg capsules · UPC 7 33739 02675 0
  5. Label 72465 Entered March 24, 2017 · off the market December 6, 2018 · 8 oz. · UPC 7 33739 02676 7
  6. Label 62496 Entered July 25, 2016 · off the market March 24, 2017 · 250 veg capsules · UPC 7 33739 02675 0
  7. Label 44618 Entered April 24, 2015 · off the market November 30, 2016 · 8 oz. · UPC 7 33739 02676 7
  8. Label 44616 Entered April 24, 2015 · off the market March 31, 2016 · 250 veg capsules · UPC 7 33739 02675 0
  9. Label 42767 Entered February 25, 2015 · off the market March 24, 2017 · 200 tablets · UPC 7 33739 02680 4
  10. Label 36692 Entered August 26, 2014 · off the market February 16, 2015 · 200 tablets · UPC 7 33739 02680 4
  11. Label 13837 Entered October 1, 2012 · off the market March 24, 2015 · 8 oz. · UPC 7 33739 02676 7

DSLD also links this label to: Kelp 150 mcg (image difference, same product), Kelp 150 mcg Of Natural Iodine (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?