🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 25% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Label Data

7.5 Gram(s) Serving Size
42 Servings
Other Combinations Product Type
25% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
2350 mg (2611% DV)
Calcium
350 mg (27% DV)
350 mg (83% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 350mg
Potassium
99 mg (2% DV)

Other Ingredients

Citric Acid Inulin Natural Flavors Silicon Dioxide Calcium Silicate Rebaudioside A Beet, Powder

Label Claims — Verification

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

Target Groups

Vegetarian Adult (18 - 50 Years) Kosher Gluten Free Dairy Free

Product Information

📋 Directions for Use

Directions: Mix 1 scoop (7.5 grams) with a cup of water or juice. Take daily, with or without food, or as directed by a healthcare practitioner.

⚠️ Warnings & Precautions

Keep out of reach of children

Do not use if safety seal is damaged or missing.

If pregnant, nursing or on medication, consult with your healthcare practitioner.

🧪 Formulation Notes

Gentle & non-irritating Vitamin C Zahler Buffered C Powder contains Vitamin C plus the buffering minerals Calcium, Magnesium & Potassium Ascorbates. This advanced formula is easy on the stomach and non-irritating to the intestinal lining. Vitamin C is an essential antioxidant and a continuous supply is needed as it is water soluble and the body cannot store it.

Kosher Pareve OU (Kosher) Under the Strict Supervision of Rabbi Sh. Stern & The Orthodox Union

Non-gmo Gluten free Dairy free Soy free

Vegetarian Friendly

Vitamin C + buffering minerals Natural berry flavor

General health

This is a natural product that may exhibit color, taste, and density variations from batch to batch.

Additional Information

You may need additional supplements to support a healthy diet; consult your nutritionist for a formula that is right for you or contact us at 877-ASK-ZAHLER (877-275-9245) or ask@zahlers.com

OU (Kosher) D GMP Vegetarian Friendly Made in the USA with domestically sourced ingredients

Store tightly closed in a cool, dry place.

Product Details

UPC / SKU 8 48998 08248 2
DSLD Entry Date 2023-11-22
Product Type Other Combinations
Form Powder
DSLD ID 301093
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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