---
product_id: 10605144
title: "High Potency Vitamin C (Formerly Buffered C Powder) - Vitamin C (Ascorbic Acid) with Calcium, Magnesium & Potassium - Supports Healthy Immune Function & Collagen Formation* - 8.47 Oz"
brand: "thorne"
price: "S$59"
currency: SGD
in_stock: true
reviews_count: 11
category: "Thorne"
url: https://www.desertcart.sg/products/10605144-high-potency-vitamin-c-formerly-buffered-c-powder-vitamin-c
store_origin: SG
region: Singapore
---

# 1000mg Vitamin C per serving Third-party tested & certified purity Buffered with Calcium, Magnesium & Potassium High Potency Vitamin C (Formerly Buffered C Powder) - Vitamin C (Ascorbic Acid) with Calcium, Magnesium & Potassium - Supports Healthy Immune Function & Collagen Formation* - 8.47 Oz

**Brand:** thorne
**Price:** S$59
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your wellness game with Thorne’s elite Vitamin C blend!

## Quick Answers

- **What is this?** High Potency Vitamin C (Formerly Buffered C Powder) - Vitamin C (Ascorbic Acid) with Calcium, Magnesium & Potassium - Supports Healthy Immune Function & Collagen Formation* - 8.47 Oz by thorne
- **How much does it cost?** S$59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/10605144-high-potency-vitamin-c-formerly-buffered-c-powder-vitamin-c)

## Best For

- thorne enthusiasts

## Why This Product

- Trusted thorne brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pure & Verified:** Third-party certified to guarantee label accuracy and contaminant-free quality, so you get exactly what you pay for.
- • **Immune Powerhouse:** High-potency vitamin C fortified with essential minerals to supercharge your immune defense and antioxidant protection.
- • **Gentle on Digestion:** Buffered formula with calcium, magnesium, and potassium ascorbates minimizes acidity for smooth absorption and gut comfort.
- • **Trusted by Champions:** Clinically recommended and used by 100+ pro sports teams and U.S. National Teams—join the elite wellness circle.
- • **Skin & Collagen Boost:** Supports collagen synthesis for radiant skin, stronger nails, and healthier hair—your glow-up essential.

## Overview

Thorne High Potency Vitamin C is a buffered powder supplement delivering 1000mg of vitamin C per serving, enhanced with calcium, magnesium, and potassium for optimal absorption and digestive comfort. Clinically trusted by professional athletes and third-party certified for purity, it supports immune health, collagen production, and antioxidant defense in a clean, easy-to-use formula.

## Description

Buy THORNE - High Potency Vitamin C (Formerly Buffered C Powder) - Vitamin C (Ascorbic Acid) with Calcium, Magnesium & Potassium - Supports Healthy Immune Function & Collagen Formation* - 8.47 Oz on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Consistent quality for years - We have been buying this for many years, and find it to be the same quality throughout. This buffered C powder was first recommended by our ND for part of a detox protocol, and then at a lower dose as part of a hydration and electrolyte balancing. Usually I add just a pinch or half the (included) scoop into a litre or gallon of water or homemade lemonade to sip throughout the day. I add it to my homemade lemonade as the plain taste is a bit chalky, and it does dissolve really well in lemonade. Easy to measure as the scoop is included. Can be added to a smoothie or cold fruit tea or juice. This blend is not just the vitamin C, but is a buffered formula meant to be softer on digestion (C can feel acidic), however the magnesium will stimulate bowel movement when ingested past your personal tolerance. Best to test out by using less at first. This can last our family awhile depending on time of year, whether anyone has gotten sick, and is a standard in our home. Unfortunately the price has increased significantly.
Review: Great Quality Vitamin C - There are a lot of Vitamin C products out there so I was skeptical. I got this one because of the good reputation of THORNE and prior experience. This Buffered C Power is great. It dissolves quickly. It doesn't have added sugars to make it taste good. But more importantly, it works good!

## Features

- Immune Support: Essential vitamin C with additional minerals for optimal immune function and antioxidant support resulting in better cellular protection against free radicals within the body*
- Healthy Skin: Promotes collagen production, which enhances skin, nail, and hair health and supports healthy tissue and cartilage formation*
- Easy on the Stomach: Calcium, magnesium, and potassium ascorbates serve as a buffer to help make the higher serving of vitamin C easier to absorb, while providing additional support for healthy bones and soft tissue*
- Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
- Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B005IZIXC4 |
| Best Sellers Rank | #20,791 in Health & Household ( See Top 100 in Health & Household ) #170 in Vitamin C Supplements |
| Customer Reviews | 4.6 4.6 out of 5 stars (854) |
| Date First Available  | January 22, 2008 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | C155 |
| Manufacturer  | Thorne Research |
| Product Dimensions  | 3.5 x 3.5 x 4 inches; 8.32 ounces |

## Product Details

- **Brand:** THORNE
- **Diet Type:** Gluten Free
- **Flavor:** Unflavored
- **Item Form:** Powder
- **Primary Supplement Type:** Vitamin C

## Images

![High Potency Vitamin C (Formerly Buffered C Powder) - Vitamin C (Ascorbic Acid) with Calcium, Magnesium & Potassium - Supports Healthy Immune Function & Collagen Formation* - 8.47 Oz - Image 1](https://m.media-amazon.com/images/I/71BK1-E8S1L.jpg)

## Questions & Answers

**Q: Is this vitamin C derived from corn or other grains?**
A: This product does not contain wheat, gluten, dairy, soy, corn, egg, peanuts, yeast, sugar, magnesium stearate, binders, coatings, disintegrants, artificial colors, artificial flavors, or artificial sweeteners.

**Q: How buffered is it? It still lists Ascorbic Acid, and it's a much larger proportion than the buffered ascorbate components.**
A: All I can say is that I have not felt any ill effects from using it all these years.

**Q: Which type of magnesium is used in this product. Please articulate "buffered" why no pic of back label?**
A: Magnesium (as Ascorbate reacted from Magnesium Carbonate and Ascorbic Acid)."Buffered" refers to being easy on the digestive tract (causing less irritation to people with sensitive stomachs).There are 4 pictures posted of this product on the Amazon page, 3 of which are pics of the back label. Hope this helps.

**Q: can you use this in a bath to rid the water of Chlorine?**
A: Not unles you are a millionaire.  Much more practical to use epsom salt

## Customer Reviews

### ⭐⭐⭐⭐⭐ Consistent quality for years
*by M***N on October 31, 2025*

We have been buying this for many years, and find it to be the same quality throughout. This buffered C powder was first recommended by our ND for part of a detox protocol, and then at a lower dose as part of a hydration and electrolyte balancing. Usually I add just a pinch or half the (included) scoop into a litre or gallon of water or homemade lemonade to sip throughout the day. I add it to my homemade lemonade as the plain taste is a bit chalky, and it does dissolve really well in lemonade. Easy to measure as the scoop is included. Can be added to a smoothie or cold fruit tea or juice. This blend is not just the vitamin C, but is a buffered formula meant to be softer on digestion (C can feel acidic), however the magnesium will stimulate bowel movement when ingested past your personal tolerance. Best to test out by using less at first. This can last our family awhile depending on time of year, whether anyone has gotten sick, and is a standard in our home. Unfortunately the price has increased significantly.

### ⭐⭐⭐⭐⭐ Great Quality Vitamin C
*by L***E on December 3, 2025*

There are a lot of Vitamin C products out there so I was skeptical. I got this one because of the good reputation of THORNE and prior experience. This Buffered C Power is great. It dissolves quickly. It doesn't have added sugars to make it taste good. But more importantly, it works good!

### ⭐⭐⭐⭐⭐ Wonderful Alternative!!!
*by S***R on December 24, 2025*

Love this product!!! Clean and not full of junk!!!

## Frequently Bought Together

- THORNE Buffered C Powder - Vitamin C (Ascorbic Acid) with Calcium, Magnesium, and Potassium - 8.32 Oz
- ORGANIC INDIA Whole Psyllium Husk Powder Organic - Psyllium Husk Fiber Supplement, Digestion Support, Vegan, Gluten-Free, Non-GMO, Soluble & Insoluble Fiber Source - 12 oz (Pack of 1)
- Spectrum Essentials Organic Ground Premium Flaxseed, 24 Oz

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-04*