Nearly all of the Chinese herbs used today to treat cancer and other immune-deficient conditions fall into three broad categories. Tonic herbs increase the number and activity of immunologically active cells and proteins. Toxin-clearing herbs clear the blood of germs and of waste products from the destruction of tumors and germs. Blood activating herbs reduce the coagulation and inflammatory reactions associated with immune response. Herbal therapy in cancer treatment can improve appetite, reduce nausea and vomiting, and alleviate stress. Here are some special herbs used to treat stomach cancer.

Ginseng
Ginseng has been in use in traditional Chinese medicine for several thousand years. The dried root of Panax ginseng is used medicinally. Several studies have shown that Asian ginseng might reduce the risk of certain types of cancers. It slows down or stops the growth of cancerous tumors. The chemicals that allow it to do this are ginsenosides, panaxans, and flavonoids. Consult the product label or your doctor to know its correct dose.

Chaparral
The leaves of Larrea tridentata are used to make the chaparral extract. The active chemicals in chaparral extract are antioxidants. These chemicals boost your immune system and help your body in fighting better against the cancer cells. Although several health authorities the world over have issued warnings about using chaparral, it may be worth a try in stomach cancer because of the seriousness of the disease. 

Astragalus
The root of Astragalus membranaceus is used for medicinal purposes. It, too, has been used for thousands of years in traditional Chinese medicine. Astragalus boosts the immune system and stimulates the production of cancer-fighting chemical interferon. It also aids the immune system in identifying abnormal cells. It contains antioxidants, which prevent cell damage. Its dose is 250-500 mg thrice daily or 20-60 drops of its tincture thrice daily. It can also be taken as a decoction thrice daily. 

Garlic
TCM study finds that organosulfur compounds derived from garlic inhibit the growth of cancer cells of stomach. Garlic cloves, which are the bulbs of Allium sativum, are used medicinally. They contain the active chemicals allicin, alliin, and other antioxidants. These fight off the free radicals that contribute to the cancer. Raw garlic works better than cooked garlic or garlic extracts. You can take 2-4 g/day of minced fresh garlic cloves. Garlic is generally safe. Very rarely, it can cause headache, dizziness, muscle aches, and loss of appetite.

Green Tea
Green tea is made from the plant Camellia sinensis. It has been shown to be somewhat efficacious in the treatment of a variety of cancers, including stomach cancer. The active chemicals in green tea that help fight the cancer cells are polyphenols and antioxidants. You can consume 2-3 cups of green tea daily. It is usually safe. Taking more than 5 cups of green tea per day can be unsafe on account of its caffeine content.