Gallic Acid is found in almost all plants. Grapes, tea, gallnuts, hops and oak bark are the plants that are rich in gallic acid. It has anti-fungal and anti-viral health benefits. It acts as an anti-oxidant and protects cells from being damaged by the oxidative stress due to free radicals formed in the body. It is anti-cancerous. It also acts as an astringent for internal hemorrhages. It is used in the treatment of diabetes, albuminuria, psoriasis and external hemorrhoids. It is also used to make dyes and inks. Menorrhagia ceases due to its use. It has cardio protective properties. It has a side effect of triggering contractile responses and inhibiting vasorelaxation responses. Also, it can elevate the blood pressure.