Home/ Supplements/ Vitamin C/ Extra Strength ProtoSorb C 1000

Extra Strength ProtoSorb C 1000

product on market Tablet or Pill Protocol For Life Balance Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 14% of ingredients have research evidence
B Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin C and citrus bioflavonoids are supported by strong evidence for their roles in antioxidant support and immune function. Calcium provides essential mineral support for bone and cellular health. Research indicates these ingredients are generally safe and well-tolerated when taken as directed.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Extra Strength ProtoSorb C 1000
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Other Combinations
Product Type
14%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
1 Gram(s) (1667% DV)
Calcium
120 mg (12% DV)
Transport C-Plus
1.3 Gram(s)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Acerola powder
25 mg
Rose Hips powder
25 mg
25 mg
Market median: 500.0mg (19 products)

Other Ingredients

Cellulose Croscarmellose Sodium Stearic Acid Magnesium Stearate Silica Vegetarian Coating
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

SUGGESTED USAGE: Take 1 tablet daily, preferably with a meal, or as directed by your healthcare practitioner.

Warnings & Precautions

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.

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.

Do Not Eat Freshness Packet. Keep in Bottle.

Formulation Notes

This extra strength product has twice the Vitamin C (1,000 mg per tablet) as in our regular strength product (500 mg per capsule).

Transport C-Plus

Vegetarian/Vegan

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Non-GMO

HOW IT WORKS: ProtoSorb C is a unique formulation featuring Transport C-PLUS Threonic Acid, which has been shown to enhance uptake of Vitamin C.* This buffered, non-acidic Vitamin C supplement also contributes Alpha-Lipoic Acid, a free radical scavenger known to help regenerate both Vitamin C and glutathione in the body.*

~ Antioxidant Protection of Vitamin C*

Additional Information

GMP

Non-GMO

Natural color variation may occur in this product.

Studies suggest that Alpha-Lipoic Acid may further promote the body's utilization of Vitamin C, by activating uptake into cells via the glucose transport pathways.* Bioflavonoids also synergistically participate at the cellular level to create a well-absorbed, highly biologically available Vitamin C supplement.* Vitamin C is required for the synthesis of collagen, a structural component of blood vessels, tendons, ligaments and bone.*

~ Buffered, Non-Acidic ~ Enhanced Cellular Absorption*

CODE P0726 V5

Metadata

Product Details

UPC / SKU7 07359 10726 7
DSLD Entry Date2017-01-25
Product TypeOther Combinations
FormTablet or Pill
DSLD ID69322
Data Updated2026-04-11
Research

Research Evidence

371
Research Sources
54
Avg Quality
148
Meta Analysis
82
Systematic Review
71
Rct
62
Clinical Trial
2
Regulatory Source
1
Cochrane Review
1
Narrative Review
1
Other
1
Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024 PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.