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© 2026 Supplement DB
Information is based on public data such as DSLD and PubChem. Always check the product label before purchasing.
Amino Acids
Products with this ingredient (on market):
Across the listed products that contain L-Proline, we counted whether the amount is disclosed, how much is used, in which dosage forms and brands, and what it is combined with. This shows how the ingredient is used in a way a single label cannot.
| Amount disclosed | 179 | The label states a quantity |
|---|---|---|
| Amount not disclosed | 65 (27%) | Typically a component of a proprietary blend, where the manufacturer does not publish the amount |
| Measure | Amount | Meaning |
|---|---|---|
| Minimum | 5 mg | Lowest label value in the database |
| 25th percentile | 100 mg | A quarter of products are at or below this |
Source of Life Gold Mini-Tabs
NaturesPlus
Skin Collagen Natural Blueberry Flavor
Smarter Nutrition
InflammaCORE Strawberry
Springboard
InflammaCORE Chocolate Mint
Springboard
PodiVite
Zen Nutrients
NZURI Elixir
NZURI
Proline & Lysine
Source Naturals
Heart Science
Source Naturals
Amino Athlete
Source Naturals
VitaWave Natural Berry Flavor
Nature's Sunshine
| Median | 464 mg | The middle value |
|---|
| 75th percentile | 1,343.8 mg | A quarter of products are at or above this |
|---|
| Maximum | 3,267 mg | Highest label value in the database |
|---|
| Unit | Products | Share |
|---|---|---|
| mg | 170 | 95% |
| g | 9 | 5% |
| Form | Products | Share |
|---|---|---|
| Powder | 109 | 45% |
| Tablet | 52 | 21% |
| Capsule | 52 | 21% |
| Liquid | 18 | 7% |
| Softgel | 6 | 2% |
| Other (e.g. tea bag) |
| Brand | Products | Share |
|---|---|---|
| Nutrex Research Basix Series | 8 | 3% |
| Natural Factors | 8 | 3% |
| Douglas Laboratories | 6 | 2% |
| Metabolic Nutrition | 6 | 2% |
| PlantFusion |
| Ingredients | Products | Share |
|---|---|---|
| Calories | 141 | 58% |
| Calcium | 125 | 51% |
| Glycine | 118 | 48% |
| Total Carbohydrates | 117 | 48% |
These figures are mechanical summaries of label values from on-market products in our database. Serving definitions (number of capsules and so on) vary by product, and the figures are not intake guidance or recommendations. Check each product page and label for actual amounts.
Target TS II Formula
Nature's Sunshine
| 5 |
| 2% |
| 5 |
| 2% |
| Sport Formula 99 | 5 | 2% |
| Bronson Laboratories | 5 | 2% |
| Animal | 5 | 2% |
| CytoSport | 4 | 2% |
| BulkSupplements.com | 4 | 2% |
| 116 |
| 48% |
| Vitamin C | 105 | 43% |
| L-Lysine | 99 | 41% |
| L-Valine | 95 | 39% |
| Zinc | 94 | 39% |
| L-Isoleucine | 92 | 38% |
| L-Leucine | 92 | 38% |
| L-Threonine | 92 | 38% |
| Potassium | 92 | 38% |
| L-Methionine | 90 | 37% |
| Magnesium | 89 | 36% |