Escher - the best overall health herb, in my opinion, is moringa. In one serving it has 125% of your daily calcium, 60% magnesium, 22% of vitamin c, all your vitamin a and 71% of iron - amongst other things. it lowers blood pressure, Improves immune function, protects the stomach lining, and boosts energy. There are also studies being done to show that it helps treat cancer symptoms, ulcers, diabetes, and a whole host of other ailments. It truly is a super herb.
I also really like bee pollen. Check out this link here http://foodmatters.tv/articles-1/10-amazing-health-benefits-of-bee-pollen to read more about it. It is a super food! You can combine your daily serving, 1 tablespoon, with anything. I like to put mine in my cereal or on top of yogurt. It has a bit of a bitter taste but is easily hidden by most other foods.