Pure L-Proline USP Pharma Grade Powder
by Hard Rhino · powder · 500 grams
- On the market (NIH)
- DSLD label 34528
- Serving 500 to 2,500 mg; amounts per 500 mg
- 1000 servings
Pure L-Proline USP Pharma Grade Powder by Hard Rhino lists one ingredient: 500 mg of L-proline per serving of 500 mg. Its current label entered the NIH Dietary Supplement Label Database on June 25, 2014.
What is in Pure L-Proline USP Pharma Grade Powder?
Each row as the label prints it, per serving of 500 mg. 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-Proline | 500 mg | Higher than 51% of 387 products listing proline (median 487.5 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 34528 (entered June 25, 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?
6 products list the very same ingredients; the nearest amounts come first.
- Pure L-Proline 500 MilligramsMontiff same ingredients
- Pharmaceutical Grade AjiPure L-Proline 500 mgSwanson Ultra · off the market same ingredients
- L-Proline 500 mgSwanson Premium Brand · off the market same ingredients
- L-Proline 500 mgSolgar · off the market same ingredients
- L-Proline 500 mgDouglas Laboratories same ingredients
- L-Proline 500 mgAN Amazing Nutrition Amazing Formulas 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
- Suggested Use: Dosage for L-Proline can vary between 500 mg and 2500 mg once or twice daily. As with all our powders, a micro scale is strongly recommended for proper dosage.
- Suggested Use: As a dietary supplement, take 500mg once daily or needed. Dosages can vary from 500mg to 2500mg per day.
- Warnings
- WARNING: A scale is required for accurate measurements.
- Keep away from children.
- Do not take this or any other supplement if you are pregnant or nursing.
- Do not take if you have high blood pressure or any medical complications.
- Do not take this or any other supplement if you are pregnant or nursing, have high blood pressure or taking other prescription drugs.
- Allergens and what it does not contain
- No added fillers No flow agents No driers No other ingredients
- Allergens: This product contains NO Soy, Milk & Byproducts, Eggs, Fish, Shellfish, Wheat, Gluten, Tree Nuts, or Sesame Seeds.
- Storage
- Storage: Store in a cool and dry place. Keep away from strong light and heat.
Source: label statements in DSLD label 34528.
What else is on the label?
Other ingredients: L-Proline.
How many labels does Pure L-Proline USP Pharma Grade Powder have?
One label is on file, entered on June 25, 2014.
- Label 34528 (current) Entered June 25, 2014 · on the market · 500 grams
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names GUARDIAN Biosciences (manufacturer), Phoenix, Arizona. All Hard Rhino products.