SiSU
Ester-C Supreme
81/100
SUPPIE SCORE
78/100
EFFICACY
High
SAFETY
76/100
CLEANLINESS
What Does Ester-C Supreme Do?
- Ester-C calcium ascorbate provides buffered, well-absorbed vitamin C at 600 mg per capsule.
- Quercetin at 50 mg is below typical studied immune doses (250-500 mg).
- Arabinogalactan 100 mg and anthocyanidins 50 mg are modest but disclosed amounts.
How does the Ester-C form compare to regular vitamin C for absorption?
What is the evidence for arabinogalactan and quercetin supporting immunity?
Is 50 mg quercetin per capsule an effective dose?
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What Are the Benefits of Ester-C Supreme?
Based on proven scientific research
Immune supportStrong
Antioxidant activityStrong
Seasonal allergy reliefModerate
Good For:
What Are the Side Effects of SiSU Ester-C Supreme?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•Vitamin C at 600-1200 mg daily is within safe upper limits for most adults.
•Quercetin may interact with quinolone antibiotics and blood thinners as noted on label.
•Not recommended during pregnancy or breastfeeding per product warnings.
•Suitable for vegan diets; free of gluten, dairy, soy.
•Consult practitioner before use beyond 12 weeks.
Potential Side Effects
Negative Interactions
Inactive Ingredients
Low Risk
Low Risk
Low Risk
Low Risk
What Are the Ingredients in SiSU Ester-C Supreme?
Vitamin C (calcium ascorbate) from Ester-C®
600 mg
Arabinogalactan (Larix occidentalis/Larix laricina) (bark/stem) ResistAid™
100 mg
Quercetin
50 mg
Multi-anthocyanidins (Concord grape, black currant, cranberry, blueberry, bilberry)
50 mg
magnesium stearate (vegetable)
microcrystalline cellulose
silicon dioxide
hypromellose
Sources & References
Frequently Asked Questions
Common questions about SiSU Ester-C Supreme