PlainVitamins

ProtoSorb C 500

by Protocol For Life Balance · capsule · 100 veg capsules

  • On the market (NIH)
  • UPC 7 07359 10716 8
  • DSLD label 326470
  • Serving 1 veg capsule
  • 100 servings

ProtoSorb C 500 by Protocol For Life Balance lists 7 ingredients, 7 with an amount per serving of 1 veg capsule, such as 500 mg of vitamin C, 60 mg of calcium, 100 mg of citrus bioflavonoid complex and 25 mg of acerola, powder. Its current label entered the NIH Dietary Supplement Label Database on January 23, 2025.

What is in ProtoSorb C 500?

Each row as the label prints it, per serving of 1 veg capsule. 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).

ProtoSorb C 500: Supplement Facts rows against the market (DSLD label 326470, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Threonic Acid500 mg556%Vitamin C in ProtoSorb C 500 against 18,583 products500 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg500 mg

Higher than 81% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 1,500 mg.

Calciumas Calcium Ascorbate, Buffered60 mg5%Calcium in ProtoSorb C 500 against 17,831 products60 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg60 mg

68% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 180 mg.

Transport C-PLUSas Alpha-Lipoic Acid, Calcium Ascorbate, Bufferedtrademarked blend of threonic acid enhanced buffered calcium ascorbate and alpha lipoic acid650 mg
Alpha-Lipoic Acid40 mgAlpha Lipoic Acid in ProtoSorb C 500 against 2,407 products40 mg per serving; the middle half of products list 25 mg to 150 mg, the median 50 mg.40 mg

62% of 2,407 products listing alpha lipoic acid give more (median 50 mg). Per day at the most servings: 120 mg.

Citrus Bioflavonoid Complex100 mgFlavonoid in ProtoSorb C 500 against 2,343 products100 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.100 mg

Higher than 62% of 2,343 products listing flavonoid (median 50 mg). Per day at the most servings: 300 mg.

Acerola, Powderas Malpighia punicifolia, Powder25 mgAcerola in ProtoSorb C 500 against 436 products25 mg per serving; the middle half of products list 14.5 mg to 300 mg, the median 60 mg.25 mg

66% of 436 products listing acerola give more (median 60 mg). Per day at the most servings: 75 mg.

Rose Hips, Powderas Rosa canina, Powder25 mgDog Rose in ProtoSorb C 500 against 397 products25 mg per serving; the middle half of products list 10 mg to 65 mg, the median 25 mg.25 mg

44% of 397 products listing dog rose give more (median 25 mg). Per day at the most servings: 75 mg.

Rutin, Powderas Sophora japonica, Powder25 mgRutin in ProtoSorb C 500 against 1,232 products25 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.25 mg

37% of 1,232 products listing rutin give more (median 25 mg). Per day at the most servings: 75 mg.

Source: NIH ODS Dietary Supplement Label Database, label 326470 (entered January 23, 2025), 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

The NIH database records 1 to 3 servings 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?

4 products list the very same ingredients; the nearest amounts come first.

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 usage: Take 1 capsule 1 to 3 times daily, preferably with food, or as directed by your healthcare practitioner.
Warnings
Cautions/interactions: Vitamin C may interact with oral estrogen medications, HMG CoA inhibitors, and blood thinning medications.
Doses of > 2000 mg Vitamin C per day may cause GI disturbances in sensitive individuals and may not be advisable for some people.
Consult your healthcare practitioner if you take any prescription medications or have a medical condition before exceeding the recommended dosage for this product.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Allergens and what it does not contain
Non-GMO
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Source: label statements in DSLD label 326470.

What else is on the label?

Other ingredients: Hypromellose, Microcrystalline Cellulose, Stearic Acid, Magnesium Stearate, Silica.

How many labels does ProtoSorb C 500 have?

5 labels are on file under this name since June 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 326470 (current) Entered January 23, 2025 · on the market · 100 veg capsules · UPC 7 07359 10716 8
  2. Label 68777 Entered December 23, 2016 · off the market May 26, 2023 · 100 veg capsules · UPC 7 07359 10716 8
  3. Label 30052 Entered February 26, 2014 · off the market March 31, 2016 · 100 veg capsules · UPC 7 07359 10716 8
  4. Label 15003 Entered November 21, 2012 · off the market October 11, 2013 · 100 veg capsules · UPC 7 07359 10716 8
  5. Label 10046 Entered June 25, 2012 · off the market August 9, 2012 · 100 vcaps(R) · UPC 7 07359 10716 8

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

Who makes it?

The label names Protocol For Life Balance (manufacturer), Bloomingdale, IL. All Protocol For Life Balance products.

Where next?