Adverse effects reported to the Food and Drug Administration (FDA) in patients treated with IV vitamin C.

When the vitamin C dose was provided as ml, the dose was converted to mg on the basis that vitamin C is supplied as 0.5gram/ml solution. Some practitioners did not mention the dose of vitamin C used. The format of the FDA adverse events database did not permit identification of specific patients, so that the same patient may have been reported multiple times in the same quarter or in several quarters, inflating the number of patients with adverse events.

当维生素C剂量以毫升（ml）为单位给出时，需基于“维生素C以0.5克/毫升的溶液形式提供”这一前提，将剂量换算为毫克（mg）。部分医疗从业者未提及所使用的维生素C剂量。美国食品药品监督管理局（FDA）不良事件数据库的格式无法识别特定患者，因此同一患者可能在同一季度或多个季度内被多次上报，进而导致不良事件患者的统计人数被高估。