U get them in pill forms marketted by most ayurvedic giants. I started on Amla as a better substitute for celine (Vitamin C) after the knee injury. Vitamin C is a miracle nutrient that way. I always use it when I have to heal, be it from some infection or while recovering or a sudden injury. And of course, when I am stressed.
The skin also glows from Vitamin C simply because it reduces inflammation inside (this causes a lot of damage) and because it is an antioxidant -- repairing agent.