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Vitamin C

Vitamin Unit: mg/dL

Antioxidant; essential for collagen and immune function

Also known as: Ascorbic Acid

Reference Ranges

Clinical Reference 0.4 – 2.0 mg/dL
Optimal Range 0.6 – 1.5 mg/dL

Plasma levels reflect recent intake

Related Conditions

Scurvy Low
Impaired Wound Healing Low

Food & Lifestyle Recommendations

🍎 Food Eat vitamin C-rich foods daily: bell peppers, citrus, strawberries, broccoli, kiwi One red bell pepper provides 200-300% of daily vitamin C needs
🍎 Food Eat vitamin C foods raw or lightly cooked — heat and light degrade vitamin C Vitamin C can lose 30-50% of content during cooking; steaming preserves more than boiling

Evidence-Backed Supplements

When Low

  • Vitamin C Tier A May Increase

    Strong evidence; direct supplementation corrects vitamin C deficiency. RDA is 75-90mg/day; higher doses for deficiency correction.

    Ascorbic acid or liposomal vitamin C 500–2000 mg/day Divided doses
    PMID 26415762 PMID 28301692 PMID 23440782

Questions to Ask Your Doctor

  • Could my low vitamin C level be affecting my immune function or wound healing? Vitamin C deficiency impairs immune function, wound healing, and collagen synthesis. Dietary intake should be assessed.

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