High-Dose IV Vitamin C (IVC)

The Riordan Clinic (Wichita and Overland Park, Kansas), a currently operating integrative-medicine practice, markets high-dose intravenous vitamin C on its own website as a therapy for cancer patients, telling prospective patients that the National Institutes of Health has published evidence confirming vitamin C's anti-cancer properties and that patients who receive it report reduced pain and better chemotherapy tolerance (see the case body for the exact quoted wording). Page has no byline or last-updated date; footer reads a 2026 copyright notice. This is the case's present-day, subject's-own-material source for the active-enterprise requirement: a specific, currently operating clinic still selling the intervention this case documents. Its NIH-attribution claim is not corroborated by, and is in tension with, the National Cancer Institute's own current position (see nci-pdq-high-dose-vitamin-c-2024): the FDA has not approved high-dose vitamin C for any medical condition and human efficacy remains unestablished.