🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 40% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

0.5 Rounded Teaspoon(s) Serving Size
Other Combinations Product Type
40% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
1584 mg
Potassium
99 mg
Calcium
40 mg
16 mg
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 16mg
600 mcg
✅ Within RDA (0.1× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 0.6mg UL 40mg

Other Ingredients

None

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Typical dosage As a dietary supplement, take one rounded half-teaspoon mixed with four (4) ounces of liquid or as directed by your health professional. Wait for effervescence to stop before drinking. Use only dry measuring spoons.

⚠️ Warnings & Precautions

Warning: Pregnant and nursing mothers need to check with their health professional before taking supplements.

🧪 Formulation Notes

Note: Each rounded teaspoon contains 3.2 grams of fully buffered ascorbate. Each 8-ounce bottle contains 143 servings with a total of 227 grams of ascorbate. Each 16-ounce bottle contains 287 servings with a total of 454 grams of ascorbate.

Buffered Ascorbate powder

BPA free POP free Phthalates free Solvent free

Additional Information

Get the lead out: PERQUE Potent C Guard is effective at lowering the body's burden of toxic minerals such as lead, mercury, cadmium, arsenic, and nickel. This action occurs both by decreasing uptake of toxic minerals from the intestine and by increasing renal and stool excretion of toxic minerals.

One PERQUE Potent C Guard rounded half-teaspoon provides Energized nutrients

Keep tightly capped and moisture free.

Available in 8-ounce and 16-ounce bottles. Also available as 1,000 mg. ascorbate (as calcium ascorbate) tabsules in bottles of 100 and 250 tabsules.

For information on how to do an ascorbate calibration (C cleanse), ask your health professional.

Enhances cell energy and helps reduce oxidative stress

Guaranteed Clinically Tested 100% Bioavailable

100% Active

Product Details

DSLD Entry Date 2019-09-24
Product Type Other Combinations
Form Powder
Brand Perque
DSLD ID 206266
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
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
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
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
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
View all evidence for Vitamin C →

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