BulkSupplements.com · Amino acid/Protein supplement
L-Proline 550 mg
2 ingredients on file in the NIH Dietary Supplement Label Database. Currently on-market in the U.S.
- 2
- Ingredients
- 2
- Nutrient categories
- Top 97%
- By ingredient count
L-Proline 550 mg is a amino acid/protein supplement by BulkSupplements.com in capsule form, listing 2 ingredients in the NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. Currently listed as on-market. Daily Value percentages shown below are based on FDA reference daily intake amounts for adults.
Product Details
- Type
- 🧬 Amino acid/Protein
- Form
- Capsule
- Database Entry Date
- 2021-08-23
- Ingredients
- 2
Supplement Facts (2 Ingredients)
How does L-Proline 550 mg compare?
Ingredients listed on each label, against the amino acid/protein category average of 12.7. Data from the NIH DSLD.
L-Proline 550 mg lists 18 ingredients fewer than 1 Up Whey Chocolate & Peanut Butter Blast. That is 11 below the amino acid/protein average.
What the Label Data Shows
L-Proline 550 mg is cataloged in the NIH Dietary Supplement Label Database (DSLD) as a amino acid/protein supplement from BulkSupplements.com, sold in capsule form. The label declares 2 ingredients. These ingredients span 2 nutrient categories, amino acid, other, reflecting a multi-component formula rather than a single-nutrient product.
Daily Value coverage on this label is informative. No ingredients on this label reach 100% of the FDA reference Daily Value, 0 fall below 100% DV, and 2 have no FDA-established Daily Value reference.. Some nutrients (such as botanicals, amino acids, and specialty compounds) have no Daily Value because the FDA has not set a reference intake; absence of a DV is neither good nor bad on its own.
Market status matters for supplement research. This product is currently listed as on-market in the DSLD, with its label first entered into the database on 2021-08-23. On-market products are currently being distributed in the United States, though the DSLD does not verify the accuracy of label claims or evaluate safety or efficacy. The DSLD is a label database, not an FDA approval list, under the 1994 DSHEA framework, dietary supplements do not require pre-market approval, and label information reflects what manufacturers self-declare rather than independent laboratory verification. This page presents factual label data for reference only and is not medical advice; consult a licensed healthcare provider before making decisions about any supplement.
Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD) Supplement label data for L-Proline 550 mg: ingredients, % Daily Value, market status, brand · 2026 DSLD captures manufacturer-self-declared label information; the NIH does not verify accuracy or evaluate safety/efficacy. Dietary supplements are regulated under DSHEA 1994, no pre-market FDA approval is required.
Nearby Amino acid/Protein Products
Other products in the NIH DSLD cataloged under the same supplement type. Useful for comparing formulations within the amino acid/protein category.
Compare L-Proline 550 mg vs 1 Up Whey Chocolate & Peanut Butter Blast →
Ingredient Breakdown by Category
Daily Value Coverage
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Frequently Asked Questions
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Data Sources & Methodology
Data as of 2025. Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD).
Supplement label data sourced from the Source: NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. The DSLD contains label information from dietary supplement products marketed in the United States.
Daily Value (DV) percentages are based on Source: FDA 21 CFR 101.9 Reference Daily Intake (RDI) values for adults. Products marked "Off Market" may no longer be available for purchase but their label data remains in the database for reference.
Disclaimer, Not Medical Advice: Label data from the Source: NIH Dietary Supplement Label Database (DSLD). This information is for educational and reference purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting, stopping, or combining any dietary supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.
Read our methodology , how this data is sourced, computed, and verified.