The best answer is: An herb is a plant or plant part used in its entirety, while a drug is a synthesised copy of one chemical component, such as a component found in an herb.
Improved functioning of the heart depends highly on the quality of blood and blood flow. This can be achieved by proper intake of quality food, a healthy exercise regime, and a general diet and lifestyle that are both healthy and balanced.
immune system is a collection of organs, special cells, and substances that
help protect you from infections and some other diseases. Immune cells and the
substances they make travel through your body to protect it from germs that