The Science Behind Vitamin C IV Therapy

High-dose Vitamin C (ascorbic acid) administered intravenously bypasses the gastrointestinal absorption ceiling that limits oral supplementation. Where an oral dose achieves plasma concentrations of approximately 70–80 μmol/L, intravenous administration can reach concentrations exceeding 20,000 μmol/L — levels associated with significant immune modulation, collagen synthesis stimulation, and potent antioxidant activity.

The clinical research on IV Vitamin C is substantial and growing. Studies have demonstrated efficacy in reducing fatigue in oncology patients, accelerating recovery from viral illness, and supporting tissue repair post-surgery. At Cura, our Immunity Boost and Beauty & Glow drips harness these mechanisms to deliver measurable, evidence-based results.

Oral Vitamin C is limited by active transporters in the gut wall — once saturation is reached (typically at doses above 200mg), absorption plummets and excess is excreted. This is why even taking 2,000mg orally achieves only marginally higher blood levels than 200mg. IV therapy sidesteps this limitation entirely, flooding the bloodstream with therapeutic concentrations that simply cannot be achieved through diet or supplements alone.