Ashwagandha

Ashwagandha is a plant that has been used in Ayurvedic medicine for centuries. It is what’s known as an adaptogen, which means it helps the immune system. You will see Ashwagandha recommended for recovering from colds and flu. Recent tests suggest that it also helps relieve stress and improves sleep.

You get Ashwagandha in supplement or tea form pretty much anywhere.