PlainVitamins

ThyroPlex

by Karuna · capsule · 90 capsules

  • On the market (NIH)
  • UPC 0 18647 09203 6
  • DSLD label 35824
  • Serving 1 to 2 capsules; amounts per 1 capsule
  • 90 servings

ThyroPlex by Karuna lists 8 ingredients, 8 with an amount per serving of 1 capsule, such as 10 mg of zinc, 5 mg of manganese, 1 mg of copper and 110 mcg of iodine. Its current label entered the NIH Dietary Supplement Label Database on August 26, 2014.

What is in ThyroPlex?

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).

ThyroPlex: Supplement Facts rows against the market (DSLD label 35824, January 2026 release)
IngredientAmount% DVAmong products listing it
Zincas Zinc Citrate10 mg67%Zinc in ThyroPlex against 13,186 products10 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg10 mg

51% of 13,186 products listing zinc give more (median 11 mg).

Manganeseas Manganese Aspartate5 mg250%Manganese in ThyroPlex against 7,016 products5 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg5 mg

Higher than 80% of 7,016 products listing manganese (median 2 mg).

Copperas {Copper} Aspartate1 mg50%Copper in ThyroPlex against 6,468 products1 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg1 mg

40% of 6,468 products listing copper give more (median 1 mg).

Iodineas Kelp, Potassium IodideIodine (Form: as Potassium Iodide, Kelp)110 mcg73%Iodine in ThyroPlex against 6,382 products110 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg110 mcg

58% of 6,382 products listing iodine give more (median 150 mcg).

L-Tyrosine200 mgTyrosine in ThyroPlex against 1,680 products200 mg per serving; the middle half of products list 150 mg to 989 mg, the median 500 mg.200 mg

69% of 1,680 products listing tyrosine give more (median 500 mg).

Thyroid ComplexThyroid Complex Note: from BSE-free freeze-dried bovine source150 mgThyroid in ThyroPlex against 60 products150 mg per serving; the middle half of products list 31.88 mg to 142.5 mg, the median 100 mg.150 mg

Higher than 75% of 60 products listing thyroid (median 100 mg).

Anterior PituitaryAnterior Pituitary Note: from BSE-free freeze-dried bovine source15 mgPituitary in ThyroPlex against 82 products15 mg per serving; the middle half of products list 10 mg to 30 mg, the median 17.5 mg.15 mg

50% of 82 products listing pituitary give more (median 17.5 mg).

HypothalamusHypothalamus Note: from BSE-free freeze-dried bovine source15 mg

Source: NIH ODS Dietary Supplement Label Database, label 35824 (entered August 26, 2014), 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?

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?

The products whose ingredient lists overlap most with ThyroPlex'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 for adults: 1-2 capsules daily, or as directed by your health care practitioner. Should be taken 20 minutes before or 1 1/2 hours after a meal.
Allergens and what it does not contain
Note: This product does not supply thyroid hormones. This product contains no yeast, wheat, soy, corn, milk, salt, sugar, artificial coloring, preservatives or flavoring.
Storage
Keep in a cool, dry place tightly capped.

Source: label statements in DSLD label 35824.

What else is on the label?

Other ingredients: Gelatin Capsule, Vegetable Stearate, Silica, Enzymes, Trace Minerals.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): KARUNA(R) RESPONSIBLE NUTRITION(TM).

How many labels does ThyroPlex have?

2 labels are on file under this name since August 23, 2013: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 35824 (current) Entered August 26, 2014 · on the market · 90 capsules · UPC 0 18647 09203 6
  2. Label 25091 Entered August 23, 2013 · off the market July 9, 2014 · 90 tablets · UPC 0 18647 09203 6

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Karuna Corporation (manufacturer), Novato, CA. All Karuna products.

Where next?