Ginger

In ayurvedic medicine GINGER is known as the universal remedy. This panacea of a root:

aids digestion and thwarts flatulence.
relieves nausea, morning sickness, and menstrual cramps.
reduces fevers.
lessens joint pain.
improves circulation (put a good dose in hot tea and you will feel this improved circulation immediately).
is both anti-microbial and anti-viral, making it a perfect choice for cold and flu season.