L-Proline 500 mg

Amino Acids & Protein

Brand: Douglas Laboratories

CapsuleOff Market
Click to view full label

Net Contents

60 Capsule(s)

Serving Size

1 Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

3 10539 01683 1

Product Version

Not specified

Suggested Use

Suggested Usage: As a dietary supplement; adults take 1 capsule daily or as directed by your healthcare professional.

Market Reference

$7.99 – $255.53· 36 listings
  • Douglas Laboratories L-Proline 60 Capsules

    DrHagmeyer.com5.0(4)
    $36.08
  • Now Foods L-Proline 500 Mg 120 Veg Capsules

    Swanson Health Products4.7(1200)
    $11.89
  • Best Naturals L-Proline 500 mg 120 Capsules

    Target4.8(20)
    $10.00
  • Bestvite L-Proline 500mg 120 Vegetarian Capsules

    Walmart - BESTVITE INC4.9(16)
    $21.99
  • Proline 500 mg 100 caps (Montiff)

    Lexington Natural Health Center
    $31.00
  • L-Proline 1000g Powder

    Jo Mar Labs
    $161.40
  • L-Proline 500 mg 120 Capsules

    Physicians Preference Vitamins
    $35.95
  • Swanson L-Proline 500 mg 100 Capsules

    iHerb4.8(209)
    $14.29

Where to Buy Locally

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

  • Discount Nutrition Superstore

    5.0 (724)

    Vitamin & supplements store

    6340 S Rural Rd #104, Tempe, AZ 85283

  • Rexius Nutrition Tempe

    5.0 (123)

    Vitamin & supplements store

    101 E Southern Ave, Tempe, AZ 85282

  • Natural Supplements USA

    5.0 (1)

    Vitamin & supplements store

    4500 S Lakeshore Dr #510, Tempe, AZ 85282

  • One Stop Nutrition

    3.4 (60)

    Vitamin & supplements store

    1710 S Alma School Rd, Mesa, AZ 85210

  • Peak Nutrition

    5.0 (345)

    Vitamin & supplements store

    1840 E Warner Rd Ste 107, Tempe, AZ 85284

  • LFTD. Lifestyle

    5.0 (40)

    Vitamin & supplements store

    1833 W Main St STE 112, Mesa, AZ 85201

  • Performance-Supp.com

    4.8 (43)

    Vitamin & supplements store

    2636 S Wilson St Ste 104, Tempe, AZ 85282

  • GNC

    4.0 (67)

    Vitamin & supplements store

    1726 E Southern Ave Unit 20 Suite 1, Tempe, AZ 85282

Research & Studies

  • Risk Assessment of" Other Substances"–L-proline

    K Holvik, L Frøyland, M Haugen, S Henjum, M Løvik… - 2018 - pesquisa.bvsalud.org

    … effects of L-proline supplementation in … 500 mg/kg bw L-proline was administered as a growth hormone stimulatory agent to 20 children with hyposomatotropic dwarfism and 20 healthy …

    20181 citations
  • Toxicological evaluation of L-proline in a 90-day feeding study with Fischer 344 rats

    Y Tada, N Yano, H Takahashi, K Yuzawa… - Regulatory Toxicology …, 2010 - Elsevier

    l-proline (l-Pro) is a non-essential amino acid, and has become widely used as supplements and health foods, recently. A subchronic oral toxicity study of l-Pro was conducted with …

    201015 citations
  • Investigating the Role of Polyamine Metabolites in Aging and Disease with Quantitative Mass Spectrometry

    CJ Kaminsky - 2026 - search.proquest.com

    … Modern biochemical technologies allow researchers to probe the intricacies of human health … Elevated levels of polyamines are known to be highly associated with healthy aging and …

    2026
  • Leucine kinetics at graded leucine intakes in young men

    MM Meguid, DE Matthews, DM Bier… - … American journal of …, 1986 - academic.oup.com

    … in healthy adults (14). This view is strengthened … intake of 14 mg’ kg - day represents the upper range of the requirement for this amino acid in healthy adults. However, …

    1986166 citations
  • Stimulation of trace element absorption by major metals in vitro.

    JB Adekalu, FW Heaton - … of the Nutrition …, 1992 - research.lancaster-university.uk

    … We have therefore studied the effect of tFA supplements on skeletal muscle membrane … The primary goal in this survey was to determine whether health issues influence milk choice. …

    19925 citations
  • L-ornithine alleviates inflammatory bone loss by suppressing osteoclastogenesis

    Y Li - d-nb.info

    … In addition to re-entering the cycle, ornithine can also be metabolized by ornithine aminotransferase (OAT) to L-proline, or decarboxylated by ornithine decarboxylase (ODC) to …

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2012-06-01. DSLD Label ID: 9288. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.