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Sisu Ester-C Supreme (VCaps)

SKU: S01113

24-hour vitamin C protection with enhanced absorption and retention

What It Does

Delivers 24-hour vitamin C protection with a single daily dose. Unlike regular vitamin C that clears your system in hours, Ester-C's patented calcium ascorbate formula stays active in your immune cells for up to 24 hours. Enhanced with quercetin and berry bioflavonoids for maximum absorption.

Why It Works

PROVEN RETENTION: Clinical studies show Ester-C remains in white blood cells 24 hours — no other vitamin C can make this claim.
ENHANCED ABSORPTION: Contains L-threonate metabolites that improve cellular uptake compared to standard ascorbic acid.
STOMACH-FRIENDLY: Calcium-buffered process makes it less acidic and gentler than regular vitamin C.
SYNERGISTIC SUPPORT: Quercetin provides anti-inflammatory benefits while berry bioflavonoids boost vitamin C absorption.

What's Inside

Clean vegan formula in vegetable capsules. Contains no dairy, wheat, gluten, peanuts or soy. Made in Canada to strict quality standards.

Why we carry it: The only vitamin C with published research proving 24-hour immune cell retention — results that matter.

Medicinal Ingredients
Servings Size: 1 Veg Caps
Servings Per Container: 120
	Amount per Serving
Vitamin C (calcium ascorbate)	638 mg
from Ester-C brand calcium ascorbate
Arabinogalactan (Larix occidentalis) bark	100 mg
Quercetin (fruit)	50 mg
Multianthocyanidins (berry/fruit*)	50 mg
*bilberry, cranberry, black currant, grape
Non-medicinal ingredients: magnesium stearate (vegetable).
Capsule shell: hypromellose.
Contains no dairy, wheat, gluten, peanuts or soy.

Take 1-2 capsules daily or as directed by a health care practitioner.

Size: 120 VCaps

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What It Does

Why It Works

PROVEN RETENTION: Clinical studies show Ester-C remains in white blood cells 24 hours — no other vitamin C can make this claim.
ENHANCED ABSORPTION: Contains L-threonate metabolites that improve cellular uptake compared to standard ascorbic acid.
STOMACH-FRIENDLY: Calcium-buffered process makes it less acidic and gentler than regular vitamin C.
SYNERGISTIC SUPPORT: Quercetin provides anti-inflammatory benefits while berry bioflavonoids boost vitamin C absorption.

What's Inside

Clean vegan formula in vegetable capsules. Contains no dairy, wheat, gluten, peanuts or soy. Made in Canada to strict quality standards.

Why we carry it: The only vitamin C with published research proving 24-hour immune cell retention — results that matter.

Medicinal Ingredients
Servings Size: 1 Veg Caps
Servings Per Container: 120
	Amount per Serving
Vitamin C (calcium ascorbate)	638 mg
from Ester-C brand calcium ascorbate
Arabinogalactan (Larix occidentalis) bark	100 mg
Quercetin (fruit)	50 mg
Multianthocyanidins (berry/fruit*)	50 mg
*bilberry, cranberry, black currant, grape
Non-medicinal ingredients: magnesium stearate (vegetable).
Capsule shell: hypromellose.
Contains no dairy, wheat, gluten, peanuts or soy.