In bladder cancer, malignant cells form in the lining of the bladder, a muscular pouch that temporarily holds urine. The exact cause of bladder cancer is unknown, but changes in DNA play a role. Bladder cancer usually appears in people over age 50, but may occur at any age. The treatment depends on the stage of cancer. In general, bladder cancer is completely curable if detected and treated early. Some herbal treatments may hold promise for the treatment of bladder cancer, but you must always consult with your doctor before using them.

Garlic
Garlic, a popular cooking herb, may exert its action on bladder cancer or tumor-associated cells due to the radical scavenging effects of the sulfur compounds found in garlic, according to MedlinePlus. Allicin and alliin, two major organosulfur compounds of garlic, can block cell-damaging free radicals that contribute to the development of cancer. 

Astragalus
Astragalus is the dried root of an Asian milk vetch. It has powerful anti-cancer and immunostimulating properties. Normally, when your body's immune system is strong, it can fight against cancer. IL-2, the main medical ingredient of astragalus, stimulates the growth of immune cells and their response to bladder cancer.

Green Tea
Green tea, an unfermented tea, contains certain substances called catechins that may slow the growth of bladder cancer cells. The exact mechanism is unknown, but one of the primary catechins, epigallocatechin-3-gallate, may be able to detoxify toxic chemicals and inhibit cancer cell activity. Talk with your doctor to learn whether green tea may be advisable for your particular condition.