PlainVitamins

TMG Crystals

by Jarrow Formulas · powder · 1.76 ozs

  • On the market (NIH)
  • UPC 7 90011 20005 5
  • DSLD label 201848
  • Serving 0.65 g (1 scoop)
  • 77 servings

TMG Crystals by Jarrow Formulas lists one ingredient: 650 mg of trimethylglycine per serving of 0.65 g. Its current label entered the NIH Dietary Supplement Label Database on April 25, 2019.

What is in TMG Crystals?

Each row as the label prints it, per serving of 0.65 g. 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).

TMG Crystals: Supplement Facts rows against the market (DSLD label 201848, January 2026 release)
IngredientAmount% DVAmong products listing it
Trimethylglycineas Anhydrous Betaine650 mgBetaine in TMG Crystals against 731 products650 mg per serving; the middle half of products list 50 mg to 1,250 mg, the median 250 mg.650 mg

Higher than 63% of 731 products listing betaine (median 250 mg).

Source: NIH ODS Dietary Supplement Label Database, label 201848 (entered April 25, 2019), 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?

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
Usage: Take 1 scoop per day or as directed by your qualified healthcare professional.
Warnings
Note: If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product.
Keep out of the reach of children.
Allergens and what it does not contain
No wheat, gluten, soybeans, dairy, egg, fish/shellfish, or peanuts/tree nuts.
Non GMO
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 201848.

What else is on the label?

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Vegan V; Non GMO Certified by NSF www.nsfnongmo.org. Listed with: NSF certified (contents or GMP) (a seal is the label's claim; the certifier's own list confirms it).

How many labels does TMG Crystals have?

5 labels are on file under this name since April 26, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 201848 (current) Entered April 25, 2019 · on the market · 1.76 ozs · UPC 7 90011 20005 5
  2. Label 51404 Entered October 22, 2015 · off the market February 13, 2019 · 1.76 oz. · UPC 7 90011 20005 5
  3. Label 37761 Entered October 10, 2014 · off the market March 3, 2015 · 1.76 oz. · UPC 7 90011 20005 5
  4. Label 30166 Entered February 26, 2014 · off the market September 4, 2014 · 1.76 oz. · UPC 7 90011 20005 5
  5. Label 7611 Entered April 26, 2012 · off the market December 13, 2013 · 50 g · UPC 7 90011 20005 5

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

Who makes it?

The label names Jarrow Formulas Superior Nutrition and Formulation (distributor), Los Angeles, CA. All Jarrow Formulas products.

Where next?