PlainVitamins

Kelp Whole Thallus 600 mg

by Nature's Way · capsule · 180 vegan capsules

  • On the market (NIH)
  • UPC 0 33674 14508 1
  • DSLD label 327988
  • Serving 1 capsule
  • 180 servings

Kelp Whole Thallus 600 mg by Nature's Way lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 270 mcg of iodine and 600 mg of kelp. Its current label entered the NIH Dietary Supplement Label Database on March 25, 2025.

What is in Kelp Whole Thallus 600 mg?

Each row as the label prints it, per serving of 1 capsule. 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 Whole Thallus 600 mg: Supplement Facts rows against the market (DSLD label 327988, January 2026 release)
IngredientAmount% DVAmong products listing it
Iodineas Kelp270 mcg180%Iodine in Kelp Whole Thallus 600 mg against 6,382 products270 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg270 mcg

Higher than 94% of 6,382 products listing iodine (median 150 mcg).

Kelp600 mgKelp in Kelp Whole Thallus 600 mg against 333 products600 mg per serving; the middle half of products list 20 mg to 100 mg, the median 50 mg.600 mg

Higher than 94% of 333 products listing kelp (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 327988 (entered March 25, 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?

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:

  • Its 270 mcg of iodine is higher than 94% of the 6,382 iodine products that print an amount; 392 list more.
  • Its 600 mg of kelp is higher than 94% of the 333 kelp products that print an amount; 14 list more.

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
Recommendation: Adults take 1 capsule daily.
Warnings
Not formulated for children.
Do not exceed recommended dose. Warning: Do not take if you have a known hypersensitivity to iodine or thyroid dysfunction.
If you are pregnant, nursing, or taking any medications, consult a healthcare professional before use.
Keep out of reach of children.
Safety sealed with inner seal. Do not use if seal is broken or missing.
Allergens and what it does not contain
Gluten free. No wheat, corn, soy, dairy, gelatin, or artificial colors, flavors, or preservatives.
Vegan Gelatin free
Non GMO Project Verified nongmoproject.org
Storage
Keep tightly closed. Store at room temperature. Avoid excessive heat and direct sunlight.

Source: label statements in DSLD label 327988.

What else is on the label?

Other ingredients: Hypromellose.

How many labels does Kelp Whole Thallus 600 mg have?

6 labels are on file under this name since September 24, 2021: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 327988 (current) Entered March 25, 2025 · on the market · 180 vegan capsules · UPC 0 33674 14508 1
  2. Label 327987 Entered March 25, 2025 · on the market · 100 vegan capsules · UPC 0 33674 14500 5
  3. Label 256128 Entered October 22, 2021 · on the market · 100 vegan capsules · UPC 0 33674 14500 5
  4. Label 251621 Entered September 24, 2021 · on the market · 100 vegan capsules · UPC 0 33674 14500 5
  5. Label 251620 Entered September 24, 2021 · on the market · 100 vegan capsules · UPC 0 33674 14500 5
  6. Label 251618 Entered September 24, 2021 · on the market · 180 vegan capsules · UPC 0 33674 14508 1

DSLD also links this label to: Kelp Certified 660 mg (package size difference, same product), Kelp Certified 600 mg (package size difference, same product), Kelp (image difference, same product), Kelp (package size difference, same product), Kelp (package size difference, same product), Kelp (image difference, same product), Kelp (package size difference, same product), Kudzu Root 1,226 mg (package size 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 Nature's Way Brands, LLC (manufacturer), Green Bay, WI. All Nature's Way products.

Where next?