High-Dose Vitamin C IV (10g)

Intravenous vitamin C infusion delivering 10 grams of ascorbic acid, a moderate high-dose protocol that elevates plasma vitamin C well beyond levels achievable through oral intake. The 10g dose is positioned as an introductory or maintenance option within the clinic's vitamin C programme.

The 10g vitamin C IV at HADA NO CLINIC delivers ascorbic acid intravenously at a concentration approximately 100 times the daily recommended dietary intake. At this dose, plasma vitamin C reaches millimolar concentrations that trigger pharmacological effects distinct from the nutritional benefits of lower doses — including enhanced collagen synthesis, improved neutrophil function, and increased antioxidant capacity in tissues throughout the body. Vitamin C is a water-soluble nutrient that humans cannot synthesise endogenously due to a loss-of-function mutation in the GULO gene — a characteristic shared by only a handful of mammalian species. This metabolic limitation means that humans are entirely dependent on external sources, and periods of illness, stress, or environmental toxin exposure can deplete stores rapidly. Intravenous delivery bypasses the intestinal absorption ceiling that limits oral vitamin C to approximately 200-250mg per dose before causing gastrointestinal distress. The 30-minute infusion at HADA NO CLINIC is priced at ¥6,380, positioning it as an accessible mid-range option between the clinic's basic fatigue recovery drip and the more intensive 50g vitamin C protocol. The 10g dose is typically recommended for patients who are new to high-dose vitamin C therapy, those seeking regular immune maintenance, or individuals who want the benefits of IVC without the longer session time required for higher doses. No specific preparation is required, though the clinic recommends adequate hydration before the session. First-time patients may undergo a brief health screening to rule out contraindications. Both the Koenji and Kojimachi locations offer this treatment seven days a week, with walk-in availability subject to treatment chair capacity. The consultation fee is waived from the second IV visit, making regular vitamin C maintenance courses financially practical.