L-Proline L-Lysine 275 mg / 275 mg

by Source Naturals · tablet or pill · 120 tablets

  • On the market (NIH)
  • UPC 0 21078 00758 6
  • DSLD label 295951
  • Serving 2 to 4 tablets; amounts per 4 tablets
  • 30 servings

L-Proline L-Lysine 275 mg / 275 mg by Source Naturals lists 8 ingredients, 8 with an amount per serving of 4 tablets, such as 1,147 mg of vitamin C, 66 mg of calcium, 46 mg of magnesium and 1.1 g of L-lysine, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.

What is in L-Proline L-Lysine 275 mg / 275 mg?

Each row as the label prints it, per serving of 4 tablets. 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).

L-Proline L-Lysine 275 mg / 275 mg: Supplement Facts rows against the market (DSLD label 295951, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories20 Calories
Total Carbohydrates2 g1%Carbohydrate in L-Proline L-Lysine 275 mg / 275 mg against 21,979 products2 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.2 g

58% of 21,979 products listing carbohydrate give more (median 3 g).

Vitamin Cas Calcium Ascorbate, Magnesium Ascorbate1,147 mg1,912%Vitamin C in L-Proline L-Lysine 275 mg / 275 mg against 18,583 products1,147 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg1,147 mg

Higher than 98% of 18,583 products listing vitamin C (median 100 mg).

Calciumas Calcium Ascorbate66 mg7%Calcium in L-Proline L-Lysine 275 mg / 275 mg against 17,831 products66 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg66 mg

66% of 17,831 products listing calcium give more (median 115 mg).

Magnesiumas Magnesium Ascorbate46 mg12%Magnesium in L-Proline L-Lysine 275 mg / 275 mg against 14,003 products46 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg46 mg

68% of 14,003 products listing magnesium give more (median 86 mg).

L-Lysine1.1 gLysine in L-Proline L-Lysine 275 mg / 275 mg against 1,250 products1,100 mg per serving; the middle half of products list 148.25 mg to 996.25 mg, the median 500 mg.1,100 mg

Higher than 83% of 1,250 products listing lysine (median 500 mg).

L-Lysine Hydrochloride, Crystallinefree-form1,374 mg
L-Proline1.1 gProline in L-Proline L-Lysine 275 mg / 275 mg against 387 products1,100 mg per serving; the middle half of products list 100 mg to 1,289 mg, the median 487.5 mg.1,100 mg

Higher than 71% of 387 products listing proline (median 487.5 mg).

Proanthodynas Grape Seed Extractwith a procyanidolic value of 95100 mgGrape in L-Proline L-Lysine 275 mg / 275 mg against 1,900 products100 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.100 mg

Higher than 58% of 1,900 products listing grape (median 50 mg).

Hawthorn Berry Extract100 mgHawthorn in L-Proline L-Lysine 275 mg / 275 mg against 589 products100 mg per serving; the middle half of products list 75 mg to 400 mg, the median 200 mg.100 mg

63% of 589 products listing hawthorn give more (median 200 mg).

Source: NIH ODS Dietary Supplement Label Database, label 295951 (entered August 23, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 1,147 mg of vitamin C is higher than 98% of the 18,583 vitamin C products that print an amount; 385 list more.

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?

The products whose ingredient lists overlap most with L-Proline L-Lysine 275 mg / 275 mg's, rare ingredients counting for more.

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: 2 to 4 tablets daily with meals.
Warnings
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Allergens and what it does not contain
Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Source: label statements in DSLD label 295951.

What else is on the label?

Other ingredients: Sorbitol, Stearic Acid, Microcrystalline Cellulose, Silicon Dioxide, Colloidal, Magnesium Stearate.

How many labels does L-Proline L-Lysine 275 mg / 275 mg have?

One label is on file, entered on August 23, 2023.

  1. Label 295951 (current) Entered August 23, 2023 · on the market · 120 tablets · UPC 0 21078 00758 6

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?