Metagenics Ultra Potent-C Vitamin C 500mg might be worth considering. We’ve been using Metagenics Ultra Potent-C Vitamin C 500mg for a few months now and have had a positive experience with it.

Vitamin C is one of the most common nutrition ... of Ascorbic Acid Solution for Injection (Preservative Free, Non-Corn) 500mg/mL, 50mL due to the presence of glass particulate matter.