L-Histidine 500 mg®

Amino Acids & Protein

Brand: Douglas Laboratories

CapsuleAmino acid/ProteinOff Market
Click to view full label

Net Contents

60 Capsule(s)

Serving Size

1 Capsule(s)

Servings Per Container

60

Supplement Form

Capsule

Bar Code (UPC/SKU)

3 10539 00421 0

Product Version

Formula #7935

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

1Active Ingredients

Single-ingredient formula listed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen Guide

Contains

  • Milk
  • Wheat
  • Soy
  • Gluten

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Supplement Facts

Serving Size: 1 Capsule(s) · 1 per day

IngredientAmount Per Serving
L-Histidine500 mg

Not Present

Other Ingredients

GelatinCelluloseVegetable Stearate

Target Groups

Adult (18 - 50 Years)

Label Claims

All Other

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

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

Warnings & Precautions

Precautions re: Children

KEEP OUT OF REACH OF CHILDREN.

Precautions re: All Other

Tamper resistant package, do not use if outer seal is missing.

Storage

Storage

For optimal storage conditions, store in a cool, dry place. (59(0) - 77(0)F/15(0) - 25(0)C) (35-65% relative humidity)

Formulation

Formulation re: Does NOT Contain

This product contains NO yeast, wheat gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.

FDA Statements

FDA Statement of Identity

A Dietary Supplement

Other Label Statements

General: Product/Version Code

Formula #7935

Manufacturer & Distributor

Manufacturer

Douglas Laboratories

600 Boyce Road, Pittsburgh, PA, 15205, USA

Other

Market Reference

$13.39 – $317.99· 14 listings
  • Douglas Laboratories L-Histidine 60 Capsules

    personalpower4.8(6)
    $27.00
  • Fairvital L-Histidin 500 mg

    Narayana - US5.0(2)
    $26.00
  • BulkSupplements L-Histidine Base Powder

    eBay - bulksupplementscs4.7(18)
    $22.97
  • L-Histidine 500mg Vegan Capsules All Natural Supplement

    Etsy - Seller
    $20.95
  • L-Histidine Base Powder

    Jo Mar Labs
    $147.30
  • Swanson Ajipure L-Histidine 500 mg 60 Capsules

    Swanson Health Products4.8(190)
    $13.39Lowest
  • Lamberts L-Histidine HCl 500mg 30 Capsules

    HealthStuff4.3(9)
    $15.08
  • Histidine View 60 / 500 Mg

    The supplements factory
    $30.00

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.

  • GNC

    4.7 (46)

    Vitamin & supplements store

    803 S State Rd, Davison, MI 48423

  • Nutrition Works

    4.6 (36)

    Vitamin & supplements store

    2815 W Silver Lake Rd, Fenton, MI 48430

  • Apex Nutrition

    4.5 (26)

    Vitamin & supplements store

    19005 Silver Pkwy, Fenton, MI 48430

  • Rebekah's Health and Nutrition Source Grand Blanc

    4.4 (56)

    Health food store

    252 Perry Rd #4, Grand Blanc, MI 48439

  • Size Up Supplements Lake Orion

    4.9 (61)

    Vitamin & supplements store

    3755 S Baldwin Rd, Lake Orion, MI 48359

  • Nutrient Revolution®

    5.0 (4)

    Vitamin & supplements store

    3150 Owen Rd Suite 4, Fenton, MI 48430

  • Super Simple Supplements

    Vitamin & supplements store

    2094 S Washburn Rd, Davison, MI 48423

  • The Vitamin Shoppe

    4.6 (112)

    Vitamin & supplements store

    3970 Baldwin Rd, Auburn Hills, MI 48326

Research & Studies

  • Kinetic–spectrophotometric approach to the ampicillin hydrolytic degradation applied for the histidine determination

    IDR Mišić, SB Tošić… - Facta Universitatis …, 2022 - casopisi.junis.ni.ac.rs

    … of L-histidine as a dietary supplement (Douglas laboratories, … (500 mg of L-histidine), was transferred into the 500 mL … Excipients present in the capsules were magnesium stearate …

    2022
  • Potential therapeutic implications of histidine catabolism by the gut microbiota in NAFLD patients with morbid obesity

    S Quesada-Vázquez, A Castells-Nobau, J Latorre… - Cell Reports …, 2023 - cell.com

    … (K and L) Boxplots represent the amount of L-histidine per gram of tissue, measured either by 1 H NMR (K) or an ELISA kit (L) of sterile flies or flies mono-colonized with E. cloacae and …

    202359 citations
  • A heretofore undisclosed crux of eosinophilia-myalgia syndrome: compromised histamine degradation

    MJ Smith, RH Garrett - Inflammation Research, 2005 - Springer

    … pyridoxal 5phosphate (PLP)-dependent L-histidine decarboxylase (HD), an enzyme present in … L-Histidine decarboxylase protein and activity in rat brain microvascular endothelial cells. …

    200543 citations
  • Protein and amino acid nutrition

    A Albanese - 2012 - books.google.com

    … In three, supplements to their diets were used in the form of 10 mg. and 50 mg. of … of the nitrogen depletion effects of the corticoids can be achieved in part by protein supplementation of …

    2012137 citations
  • Impact of acute tryptophan depletion on mood and eating-related urges in bulimic and nonbulimic women

    KR Bruce, H Steiger, SN Young… - Journal of Psychiatry …, 2009 - cdnsciencepub.com

    … In the T– mixture, we added 4.58 g of L-alanine, 2.97 g of glycine, 2.67 g of L-histidine, 6.67 g of L-isoleucine, 11.25 g of L-leucine, 9.17 g of L-lysine mono-hydrochloride, 4.75 g of L-…

    200938 citations
  • Tolerance to graded dosages of histidine supplementation in healthy human adults

    ME Gheller, F Vermeylen, MK Handzlik… - The American Journal of …, 2020 - Elsevier

    Background Histidine is an essential amino acid with health benefits that may warrant histidine supplementation; however, the clinical safety of histidine intake above the average …

    202018 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2012-02-23. DSLD Label ID: 5348. 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.