PlainVitamins

Thyro Rx

by HoltraCeuticals · capsule · 120 capsules

  • On the market (NIH)
  • DSLD label 271569
  • Serving 4 capsules
  • 30 servings

Thyro Rx by HoltraCeuticals lists 7 ingredients, 7 with an amount per serving of 4 capsules, such as 20 mg of magnesium, 400 mcg of selenium, 900 mg of ForsLean and 500 mg of L-tyrosine. Its current label entered the NIH Dietary Supplement Label Database on April 21, 2023.

What is in Thyro Rx?

Each row as the label prints it, per serving of 4 capsules. 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).

Thyro Rx: Supplement Facts rows against the market (DSLD label 271569, January 2026 release)
IngredientAmount% DVAmong products listing it
Magnesiumas TRAACS Magnesium Bisglycinate20 mg5%Magnesium in Thyro Rx against 14,003 products20 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg20 mg

83% of 14,003 products listing magnesium give more (median 86 mg).

Seleniumas L-Selenomethionine400 mcg727%Selenium in Thyro Rx against 7,658 products400 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg400 mcg

Higher than 99% of 7,658 products listing selenium (median 55 mcg).

ForsLeanas Coleus forskohlii ExtractForsLean (Form: Coleus forskohlii Extract Genus: Coleus Species: forskohlii Note: 10%)900 mgColeus in Thyro Rx against 303 products900 mg per serving; the middle half of products list 73.5 mg to 250 mg, the median 125 mg.900 mg

Higher than 96% of 303 products listing coleus (median 125 mg).

L-Tyrosine500 mgTyrosine in Thyro Rx against 1,680 products500 mg per serving; the middle half of products list 150 mg to 989 mg, the median 500 mg.500 mg

34% of 1,680 products listing tyrosine give more (median 500 mg).

Gugulipid Extract300 mgGuggul in Thyro Rx against 279 products300 mg per serving; the middle half of products list 50 mg to 350 mg, the median 100 mg.300 mg

Higher than 70% of 279 products listing guggul (median 100 mg).

Ashwagandha Extract250 mgAshwagandha in Thyro Rx against 1,646 products250 mg per serving; the middle half of products list 125 mg to 500 mg, the median 250 mg.250 mg

42% of 1,646 products listing ashwagandha give more (median 250 mg).

Alpha Lipoic Acid50 mgAlpha Lipoic Acid in Thyro Rx against 2,407 products50 mg per serving; the middle half of products list 25 mg to 150 mg, the median 50 mg.50 mg

47% of 2,407 products listing alpha lipoic acid give more (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 271569 (entered April 21, 2023), 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 400 mcg of selenium is higher than 99% of the 7,658 selenium products that print an amount; 82 list more.
  • Its 900 mg of ForsLean (filed by NIH under coleus) is higher than 96% of the 303 coleus products that print an amount; 12 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?

The products whose ingredient lists overlap most with Thyro Rx'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 4 capsules daily with meals. Can be taken throughout the day or as directed by a health professional.
Warnings
Keep out of reach of children.
Warning: Consult your physician prior to using this product if you are pregnant, nursing, taking medication or have a medical condition.
Allergens and what it does not contain
No artificial colors, no artificial flavors, no milk or milk derivatives, no preservatives, or sodium added.
Storage
Store in a cool, dry place with the lid tightly closed.

Source: label statements in DSLD label 271569.

What else is on the label?

Other ingredients: Micro Crystalline Cellulose, Cellulose, purified Water.

How many labels does Thyro Rx have?

2 labels are on file under this name since March 25, 2013: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 271569 (current) Entered April 21, 2023 · on the market · 120 capsules
  2. Label 19398 Entered March 25, 2013 · off the market October 17, 2023 · 120 capsules

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

Who makes it?

The label names Kent Holtorf, M.D. and the Holtorf Medical Group (manufacturer, distributor), El Segundo, CA. All HoltraCeuticals products.

Where next?