Gotu Kola is an herb and it's fantastic. It's like caffeine but without the drug. :) Rather than draining the adrenals like caffeine does, it strengthens them. It also strengthens veins and increases circulation (great for varicose venins).
It improves mental clarity! including lowering anxiety and curing insomnia.
It speeds wound healing.
Ayurvedic and Chinese medicine recommend Gotu Kola enemas instead of coffee.