Interest of Ascorbic Acid in the Management of Pneumonia in Elderly People Hospitalized.

This study is French non-comparative phase II clinical trial, double-blind randomized, with placebo, single-center. One group would be treated the placebo group, and another would receive an adjuvant treatment by vitamin C : 500 mg twice a day by intra-venous way from the first day to the second included, and then 500 mg twice a day by oral way from the third day to the seventh. For each patient, the study's duration is 7 days, which is the mean stay of hospitalization. During those 7 days, we will make clinical exams and blood tests at d0, d2, d4 and d7. The vitamin C blood level will be measured at d0 and d7.