Dr. Hulda Clark's L-G Formula
by Dr. Clark Research Association Dr. Clark Zentrum · liquid · 5 ounces
- On the market (NIH)
- UPC 7 640116 929944
- DSLD label 223504
- Serving 2 to 4 tsp; amounts per 0.125 tsp
- 240 servings
Dr. Hulda Clark's L-G Formula by Dr. Clark Research Association Dr. Clark Zentrum lists 2 ingredients, 2 with an amount per serving of 0.125 tsp, such as 313 mg of L-lysine hydrochloride and 313 mg of L-glutamic acid. Its current label entered the NIH Dietary Supplement Label Database on June 24, 2020.
What is in Dr. Hulda Clark's L-G Formula?
Each row as the label prints it, per serving of 0.125 tsp. 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| L-Lysine Hydrochloride | 313 mg | 60% of 1,250 products listing lysine give more (median 500 mg). | |
| L-Glutamic Acid | 313 mg | Higher than 74% of 697 products listing glutamic acid (median 80 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 223504 (entered June 24, 2020), 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 Dr. Hulda Clark's L-G Formula's, rare ingredients counting for more.
- L-Glutamic 500 mgSunshine Naturals 1 shared, 54% alike
- 100% Pure L-Glutamic AcidNutraBio 1 shared, 54% alike
- Glutamic Acid 500 mgSwanson Premium Brand · off the market 1 shared, 54% alike
- L-Glutamic Acid 500 mgSolgar 1 shared, 54% alike
- Glutamic (Glutamine) Acid 450 mgTerraVita Premium Collection 1 shared, 54% alike
- Glutamic (Glutamine) Acid PowderTerraVita Premium Collection 1 shared, 54% 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
- Add 2 tsp. to 1 1/3 cups (330 ml) of water. Heat, covered, until dissolved. Adults and children 12 or more years of age: Take 4 tsp of the solution daily throughout the day or as directed.
- Warnings
- Store out of reach of young children.
- Dietary supplements/food supplements should not be used as a substitute for a varied diet. Do not exceed the stated recommended daily dose.
- Storage
- Store in a dry, cool place.
Source: label statements in DSLD label 223504.
What else is on the label?
Other ingredients: L-Lysine Hydrochloride, L-Glutamic Acid.
How many labels does Dr. Hulda Clark's L-G Formula have?
One label is on file, entered on June 24, 2020.
- Label 223504 (current) Entered June 24, 2020 · on the market · 5 ounces · UPC 7 640116 929944
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Dr. Clark Zentrum Limited (distributor), San Gwann, Malta. All Dr. Clark Research Association Dr. Clark Zentrum products.