Black pepper is originated in India and grown in tropical regions such as South East Asia and South America. It has been used as a natural medicine/ spice for thousands of years.
In Yakuzen, black pepper is categorized as a warming food, meaning that it dispels cold and warms your organs. Also, it's believed that black pepper improves your brain function.
However, please remember that overconsuming could hurt your stomach.

Nature – Hot（熱）
Channels – Stomach (胃), Large intestine (大腸)
Flavor – Pungent (辛)

How does black pepper help you?

1. Warm your spleen and stomach and relieve cold-related stomach pain
2. Improve your appetite
3. Improve your blood circulation

Good for the following symptoms

1. Stomach pain caused by cold
2. Nausea related to cold
3. Vomiting related to cold
4. Diarrhea related to cold
5. Poor appetite

Cautions

It's very important to know about your body conditions before choosing foods.
Do not eat too much of particular foods at once.
Do not eat the foods you are allergic to.
There are foods to avoid if you are pregnant / have a disease. Ask your doctor before you start Yakuzen.