Black pepper is the fruit of the black pepper plant from the Piperaceae family and is used as both a spice and a medicine. The chemical piperine, which is present in black pepper, causes the spiciness. Because of its antibacterial properties, pepper is also used to preserve food. It is a rich source of manganese, iron, potassium, vitamin-C, vitamin K, and dietary fiber. Black pepper is also a very good anti-inflammatory agent.