In HIV disease, grapefruit helped increase the concentration of the antiviral saqunavir in the blood stream. In general most fruits have a cleansing effects on the system. The high water content of fruits flushes the digestive tract, kidney and purifies the bloodstream. Citrus fruits such as lemon, lime, pineapple and grapefruit have a strong solvent effect on the system. These fruits also have a strong effect in flushing the body of mucous build-up and purging effect on the liver and gallbladder.
Pineapple contains the enzyme bromelain.
Bromelain encourages the secretion of hydrochloric acid which assist in the digestion of proteins. Grape has a strong cleansing effect. Use the natural seeded variety. It is advised to dilute grape juice before consuming. It is said that Concord grapes are the strongest.