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Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order
Free shipping across Canada, no minimum · 30-day returns with a prepaid label · WELCOME10 = 10% off your first order



Free shipping across Canada, no minimum. Orders packed within 1–2 business days.
Free shipping across Canada with no minimum order. See shipping estimates and return conditions. To request help or a return, contact Kelorix with your order number.
Free shipping across Canada with no minimum order. See shipping estimates and return conditions. To request help or a return, contact Kelorix with your order number.
THORNE High Potency Vitamin C is a buffered ascorbic acid powder combined with calcium, magnesium and potassium to deliver a high-dose, stomach-friendlier vitamin C supplement for antioxidant support and healthy tissue formation.
Designed for people who want a concentrated vitamin C formula without the acidity that can annoy sensitive stomachs, this product pairs ascorbic acid with mineral ascorbates. The minerals act as buffers and also contribute to daily mineral intake, while third-party certification verifies label accuracy and purity. It comes in a powder format with 42 servings, making it easy to mix into water or beverages for flexible dosing.
Rather than only ascorbic acid, this blend uses calcium, magnesium and potassium ascorbates to lower acidity and improve tolerability. The powder format also offers adjustable serving sizes compared with fixed-dose tablets or capsules.
Vitamin C plays a role in collagen production, which is important for skin, hair, nails and connective tissue health. This product supplies concentrated vitamin C that supports those biological processes as part of a balanced diet and lifestyle.
The inclusion of calcium, magnesium and potassium ascorbates provides buffering that makes higher vitamin C doses more tolerable for many users. Being a powdered ascorbate formulation, it dissolves quickly for efficient absorption when taken with fluids.
Mix the recommended scoop into water or a beverage according to the label directions to reach your chosen dose. The package contains 42 servings, and the powder format allows you to tailor intake to your personal needs or practitioner recommendations.
Who is this for? THORNE High Potency Vitamin C powder is suited to adults seeking a concentrated, buffered vitamin C option—especially those with sensitive stomachs, athletes or active people who want electrolytes with their vitamin C, and anyone who prefers a flexible powder format over pills. It is third-party certified and free from gluten, dairy and soy, making it a practical choice for people with common dietary restrictions. As with any supplement, discuss use with a healthcare professional if you are pregnant, nursing, taking medications or managing chronic conditions.
One Scoop (5.7 g) Contains: Vitamin C (as Ascorbic Acid) 2.35 g, Calcium (as Ascorbate reacted from Calcium Carbonate and Ascorbic Acid) 350 mg, Magnesium (as Ascorbate reacted from Magnesium Carbonate and Ascorbic Acid) 350 mg, Potassium (as Ascorbate reacted from Potassium Bicarbonate and Ascorbic Acid) 99 mg.
Other Ingredients: None
Q: Is this Vitamin C acidic?
A: No — it uses calcium, magnesium and potassium ascorbates to buffer acidity, making it gentler than pure ascorbic acid.
Q: How many servings are in the container?
A: Each container provides 42 servings; follow the product label for scoop size and recommended dosing.
Free shipping across Canada with no minimum order. See shipping estimates and return conditions. To request help or a return, contact Kelorix with your order number.
One email a month with new buying guides written for Canadian homes. No daily promotions, unsubscribe any time.
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