ThyroTwin

by Giant Sports · capsule · 90 capsules

  • On the market (NIH)
  • UPC 0 640052 143357
  • DSLD label 37844
  • Serving 1 to 2 capsules; amounts per 1 capsule
  • 90 servings

ThyroTwin by Giant Sports lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 175 mcg of 3,5-diiiodo-L-thyronine and 25 mcg of 3,3'-diiodo-L-thyronine. Its current label entered the NIH Dietary Supplement Label Database on October 10, 2014.

What is in ThyroTwin?

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).

ThyroTwin: Supplement Facts rows against the market (DSLD label 37844, January 2026 release)
IngredientAmount% DVAmong products listing it
3,5-Diiiodo-L-Thyronine175 mcg
3,3'-Diiodo-L-Thyronine25 mcg

Source: NIH ODS Dietary Supplement Label Database, label 37844 (entered October 10, 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?

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

  • T2Liquid Labs · off the market same ingredients

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
Individual responses to dietary supplement may vary considerably. For this reason, some consumers may only need to use 1 capsule per day while others may need to consume 2 capsules per day to achieve desired results. Under no circumstances should more than 2 capsules be consumed in a 24 hour period. This product should be used in conjunction with a proper diet and exercise program.
DIRECTIONS: As a dietary supplement, start by orally ingesting 1 capsule once per day in the morning with 12-16 ounces of water on an empty stomach. If after 7 days the desired effect is not reached, you may increase dosage to 2 capsules once per day in the morning with 12-16 ounces of water on an empty stomach. Due to the exceptional potency of this product do not exceed 2 capsules per day under any circumstances. Do not use this product for more than 6 weeks continuously without a 4 week break in use.
Warnings
Warnings: This dietary supplement is intended to be used in healthy adults 18+ years of age.
Do not use this product is you are nursing, pregnant, may be pregnant or are trying to become pregnant.
Do not use this product if you have been diagnosed with infertility, hypothyroidism, hyperthyroidism, have thyroid disease of any sort or take medications for any thyroid disorder.
Do not use this product if you have high blood pressure or have been diagnosed with hypertension. Consult with your physician prior to using this product if you have any psychiatric or neurological condition, any heart or cardiovascular condition, have been diagnosed with high cholesterol or dyslipidemia or have been diagnosed with kidney or liver disease. Discontinue immediately and seek immediate medical assistance if you experience dizziness, severe headache, or shortness of breath. Discontinue the use of this product 14 days prior to any surgery. Individual responses to dietary supplement may vary considerably.
Under no circumstances should more than 2 capsules be consumed in a 24 hour period. This product should be used in conjunction with a proper diet and exercise program. This product may contain ingredients banned by certain sports or professional organizations.
User assumes all liabilities, risks and consequences related to performance enhancing testing and use of this product.
Due to the exceptional potency of this product do not exceed 2 capsules per day under any circumstances. Do not use this product for more than 6 weeks continuously without a 4 week break in use.
ALLERGEN WARNING: Produced in a facility that contains milk, soy, wheat, egg, and nut ingredients.
KEEP OUT OF REACH OF CHILDREN.
Storage
Store in a cool, dry place between 55 and 85 degrees Fahrenheit. Keep out of direct sunlight.

Source: label statements in DSLD label 37844.

What else is on the label?

Other ingredients: Gelatin, Magnesium Stearate, Rice Flour.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GIANT SPORTS.

How many labels does ThyroTwin have?

One label is on file, entered on October 10, 2014.

  1. Label 37844 (current) Entered October 10, 2014 · on the market · 90 capsules · UPC 0 640052 143357

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

Who makes it?

The label names GIANT SPORTS PRODUCTS, LLC (manufacturer), Brick, NJ. All Giant Sports products.

Where next?