PlainVitamins

Thyroid Basics

by DaVinci Laboratories · capsule · 120 capsules

  • On the market (NIH)
  • UPC 0 26664 28401 3
  • DSLD label 304051
  • Serving 2 capsules
  • 60 servings

Thyroid Basics by DaVinci Laboratories lists 16 ingredients, 16 with an amount per serving of 2 capsules, such as 5 mg of riboflavin, 25 mg of vitamin B6, 400 mcg DFE of folate and 225 mcg of iodine. Its current label entered the NIH Dietary Supplement Label Database on December 14, 2023.

What is in Thyroid Basics?

Each row as the label prints it, per serving of 2 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).

Thyroid Basics: Supplement Facts rows against the market (DSLD label 304051, January 2026 release)
IngredientAmount% DVAmong products listing it
Riboflavin5 mg385%Riboflavin in Thyroid Basics against 9,824 products5 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg5 mg

Higher than 51% of 9,824 products listing riboflavin (median 4 mg). Per day at the most servings: 10 mg.

Vitamin B6as Pyridoxal 5-Phosphate25 mg1,471%Vitamin B6 in Thyroid Basics against 15,277 products25 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg25 mg

Higher than 76% of 15,277 products listing vitamin B6 (median 6 mg). Per day at the most servings: 50 mg.

Folateas L-Methyltetrahydrofolate Calcium400 mcg DFE100%
Iodineas Potassium Iodide225 mcg150%Iodine in Thyroid Basics against 6,382 products225 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg225 mcg

Higher than 90% of 6,382 products listing iodine (median 150 mcg). Per day at the most servings: 450 mcg.

Zincas Zinc Glycinate10 mg91%Zinc in Thyroid Basics 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). Per day at the most servings: 20 mg.

Seleniumas Selenomethionine50 mcg91%Selenium in Thyroid Basics against 7,658 products50 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg50 mcg

56% of 7,658 products listing selenium give more (median 55 mcg). Per day at the most servings: 100 mcg.

Copperas Copper Glycinate0.5 mg56%Copper in Thyroid Basics against 6,468 products0.5 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg0.5 mg

68% of 6,468 products listing copper give more (median 1 mg). Per day at the most servings: 1 mg.

Manganeseas Manganese Glycinate5 mg217%Manganese in Thyroid Basics 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). Per day at the most servings: 10 mg.

Chromiumas ChromeMateChromeMate brand niacin-bound chromium50 mcg143%Chromium in Thyroid Basics against 7,825 products50 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg50 mcg

67% of 7,825 products listing chromium give more (median 100 mcg). Per day at the most servings: 100 mcg.

L-Tyrosine500 mgTyrosine in Thyroid Basics 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). Per day at the most servings: 1,000 mg.

Bacopa monnieri Extract200 mgBacopa in Thyroid Basics against 481 products200 mg per serving; the middle half of products list 100 mg to 300 mg, the median 200 mg.200 mg

43% of 481 products listing bacopa give more (median 200 mg). Per day at the most servings: 400 mg.

Bacosides40 mg
Commiphora mukul extract100 mgGuggul in Thyroid Basics against 279 products100 mg per serving; the middle half of products list 50 mg to 350 mg, the median 100 mg.100 mg

47% of 279 products listing guggul give more (median 100 mg). Per day at the most servings: 200 mg.

Guggulsterones2.5 mgGuggulsterone in Thyroid Basics against 43 products2.5 mg per serving; the middle half of products list 3.38 mg to 25 mg, the median 9 mg.2.5 mg

81% of 43 products listing guggulsterone give more (median 9 mg). Per day at the most servings: 5 mg.

ForsLeanas Coleus forskohlii Extract100 mgColeus in Thyroid Basics against 303 products100 mg per serving; the middle half of products list 73.5 mg to 250 mg, the median 125 mg.100 mg

51% of 303 products listing coleus give more (median 125 mg). Per day at the most servings: 200 mg.

Forskolin10 mgForskolin in Thyroid Basics against 77 products10 mg per serving; the middle half of products list 30 mg to 250 mg, the median 150 mg.10 mg

87% of 77 products listing forskolin give more (median 150 mg). Per day at the most servings: 20 mg.

Source: NIH ODS Dietary Supplement Label Database, label 304051 (entered December 14, 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:

  • 81% of the 43 products that print an amount of guggulsterone list more than its 2.5 mg of guggulsterone (median 9 mg).
  • 87% of the 77 products that print an amount of forskolin list more than its 10 mg of forskolin (median 150 mg).

The NIH database records 1 to 2 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?

1 product lists the very same ingredients; the nearest amounts come first.

  • Power ThyroidDr. Seth's Vitamin Vibrations same ingredients
  • Thyroid BasicsDaVinci Laboratories Of Vermont · off the market 14 shared, 76% alike
  • Thyro SupportAOR Advanced Orthomolecular Research Advanced 9 shared, 62% alike
  • ThriveEu Natural 12 shared, 44% alike
  • SparkEu Natural 12 shared, 44% alike
  • Thyroid SupportVitamin Discount Center · off the market 10 shared, 38% alike

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: As a dietary supplement, take 2 capsules with food, twice daily until results occur. Then take 2 capsules daily with food, or as directed by your healthcare practitioner.
Warnings
Warning: Do not take this product if you have an over active thyroid, bleeding disorders, cardiovascular disease or hormone sensitive conditions; or if you are taking blood thinners, calcium channel blockers, nitrates, or statin drugs.
Discontinue 2 weeks prior to any elective surgeries.
If pregnant or nursing, consult with your healthcare professional before taking this product.
Keep out of reach of children.
To obtain product information or report a serious adverse event, call 1-800-325-1776. Not labeled for sale in California.
Allergens and what it does not contain
Vegetarian / Gluten free
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 304051.

What else is on the label?

Other ingredients: Hypromellose, Microcrystalline Cellulose, Leucine.

How many labels does Thyroid Basics have?

2 labels are on file under this name since July 18, 2023: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 304051 (current) Entered December 14, 2023 · on the market · 120 capsules · UPC 0 26664 28401 3
  2. Label 288369 Entered July 18, 2023 · off the market October 1, 2022 · 120 capsules · UPC 0 26664 28401 3

DSLD also links this label to: Thyroid Basics (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 DaVinci Laboratories a division of FoodScience LLC (distributor), Williston, VT. All DaVinci Laboratories products.

Where next?