Ginseng
Ginseng can help prevent cancer, bacterial and viral infections, and autoimmune illnesses by strengthening immunity. Ginseng contains ginsenosides and polysaccharides, which are essential components with immune-boosting characteristics. It also has many natural components including Saponin Triterpenoid Tetracyclic, Dammaran group and has more than 25 different Saponins.
You can use ginseng tea to replace daily drinking water to help reduce stress, fatigue, headaches, pressure, improve memory,... and more especially, strengthen the body's immune system. On the current market, there are also many ginseng drinking products to substitute if you cannot make your own tea.