Aloe vera has anticarcinogenic properties and helps prevent or correct constipation, which in turn reduces the body's exposure to toxins. Be sure to use a food-grade product. Take ? cup of aloe vera juice two or three times daily.

Astragalus stimulates the production of T-lymphocytes (T-cells), key components of the immune system, thereby enhancing immune response. It also helps to protect the body from cardiovascular disease by improving the flow of blood to the heart. Take 500 milligrams of astragalus daily for two weeks out of every month.

Billberry contains bioflavonoids called anthocyanidins that help strengthen the smallest blood vessels and protect against capillary fragility. Billberry is especially good for the eyes. Choose a product containing 25 percent anthocyanidins and take 20 to 40 milligrams three times daily.

Burdock has anticancer, antibacterial, and antifungal properties. It assists in the production of bible, which is required for the breakdown of fats. Burdock is a common condiment in Japan, where it is taken as a digestive aid. Take 500 milligrams twice a day for one or two weeks out of each month.

Fo-ti helps prevent cardiovascular disease. It has anti-inflammatory action and can relieve the inflamed and painful joints typically of arthritis. Take 500 milligrams or one cup of tea once or twice daily.

Ginger has been used for 3,000 years for a wide variety of ailments associated with aging. It helps prevent inappropriate blood clotting, thus protecting against heart disease and stroke; it has anti-inflammatory activity, which eases inflamed joints; and it aids digestion, improving the absorption of nutrients.

Ginkgo biloba has antioxidant properties, guards against blood clots, improves circulation, and is known as an aid to improved memory and mental clarity. Choose a product containing at least 24 percent ginkgo heterosides and take 40 milligrams three times daily.

Gotu kola is excellent for all circulatory disorders. It improves circulation, eases depression, fights fatigue, helps improve appetite, and also speeds the healing of all wounds. Choose a standardized extract containing 16 percent triterpenes and take 200 milligrams two to three times daily.

Pine-bark and grape-seed extracts contain flavonoids called proanthocyanidins that work synergistically with vitamin C. Research suggests that these compounds help damage. Take 50 to 100 milligrams of pine-bark or grape-seed extract twice daily.

Schizandra is a Chinese herb with a reputation for promoting longevity. This tonic herb helps increase stamina reduces fatigue, and has been used to treat stress and depression for centuries. It also is considered to be an aphrodisiac. Take 150 to 250 milligrams upon arising and again at bedtime.