21st Century Vitamins and Supplements - For Adults, Women

Vitamin C 1000 mg

Vitamin C 1000 mg - Main image
$6.09 $9.99 In stock

Category: Vitamin C

21st 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, 21st 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.

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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Joshua T. ★★★★★

The time-release formula really makes a difference—I feel the immune support working all day without needing to remember another pill. Each tablet is easy to swallow and has no aftertaste, which I appreciate for a daily supplement.

Brian ★★★★★

I've been taking these for a few weeks and notice I don't get that midday crash like with instant-release vitamins. The 1000 mg per tablet is perfect for just one dose a day.

Eva ★★★★★

The prolonged release really makes a difference—I take one in the morning and don’t crash or feel that chalky hit like with regular tablets. It’s been three weeks and I haven’t had my usual autumn sniffle, which is a win in my book.