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21^ST Century Vitamin C 1000 mg Prolonged Release tablets deliver essential immune support through a time-released formula that maximizes absorption throughout the day. Each tablet is carefully formulated to release vitamin C gradually, ensuring your body receives consistent antioxidant support.

Vitamin C for Adults. Powerful Defense, Multiple Benefits*

Supports Your Body's Antioxidant Activity*
Helps Strengthen Natural Defenses of Your Immune System Function*
Supports Collagen Production for Healthy Skin, Joints and Blood Vessels*

Essential Vitamin C, Your Daily Wellness Companion for:

Adults Seeking Daily Immune System Support*

Increased Vitamin C Needs During Season Changes*
Antioxidant Support Against Environmental Stressors*
Support for Skin Health and Natural Collagen Production*
Seniors Concerned about Maintaining Proper Nutrient Levels While Aging*

Your Body Will Thank You

Prolonged Release technology helps maintain optimal vitamin C levels, provides sustained immune health and antioxidant support when you need it most.*

For over 30 years, 21^ST Century Vitamins has provided trusted vitamins and supplements by upholding the highest standards of quality in every product we offer. From sourcing the finest ingredients to rigorous testing and production processes, we ensure that every product meets our stringent quality benchmarks. We are here to support your wellness every step of the way.

Immune

Vitamin C 500 mg

Vitamin C 1000 mg

Vitamin C 1000 mg

Vitamin C 1000 mg with Rose Hips

Vitamin C 500 mg with Rose Hips

Vitamin C 500 mg