GNC
Vitamin C 1000 mg
90/100
SUPPIE SCORE
95/100
EFFICACY
High
SAFETY
86/100
CLEANLINESS
What Does Vitamin C 1000 mg Do?
This GNC Vitamin C 1000 mg supplement offers an excellent dosage for immune support and antioxidant benefits, enhanced by timed-release for steady absorption.
What are the main benefits of vitamin C for immune support?
How does the timed-release formulation improve absorption?
Are there any interactions between vitamin C and common medications?
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What Are the Benefits of Vitamin C 1000 mg?
Based on proven scientific research
Immune SupportVery strong
Antioxidant ProtectionVery strong
Collagen SynthesisStrong
Iron AbsorptionModerate
Good For:
What Are the Side Effects of GNC Vitamin C 1000 mg?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•Vitamin C at 1000 mg is generally safe for healthy adults, with excess excreted in urine; the timed-release formulation may reduce GI upset from high doses.
•No significant drug interactions for this formulation, though high-dose vitamin C may interfere with chemotherapy or affect blood thinner efficacy in sensitive individuals.
•Dosage is within safe upper limit of 2000 mg/day for adults; suitable for short-term use but monitor for long-term oxalate buildup in kidney stone-prone individuals.
•Not recommended for children under 12 without medical advice; safe for elderly if no kidney issues.
•No allergens present; vegetarian caplets free of gluten, dairy, soy, and common triggers.
•Pregnant or breastfeeding women can use at this dose, but consult healthcare provider as needs may vary.
Potential Side Effects
Negative Interactions
Inactive Ingredients
Microcrystalline cellulose
Low RiskCroscarmellose sodium
Low RiskMagnesium stearate
Low RiskSilica
Low RiskVegetable cellulose
Low RiskHydroxypropyl methylcellulose
Low RiskVegetable acetoglycerides
Low RiskWhat Are the Ingredients in GNC Vitamin C 1000 mg?
Vitamin C (as Ascorbic Acid)
1000 mg
Rose Hips Powder
Citrus Bioflavonoids Complex
Microcrystalline Cellulose
Croscarmellose Sodium
Magnesium Stearate
Silica
Vegetable Cellulose
Hydroxypropyl Methylcellulose
Vegetable Acetoglycerides
Dosage & Bioavailability
How the active doses and forms in Vitamin C 1000 mg compare to the research.
•Vitamin C (as Ascorbic Acid) is listed at 1000 mg per serving; without a source-specific reference range, dose adequacy cannot be graded.
•Rose Hips Powder has no individual amount disclosed, so its dose cannot be assessed.
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Frequently Asked Questions
Common questions about GNC Vitamin C 1000 mg