Barberry is a powerful antibacterial agent.

It expands the arteries, thus lowering blood pressure and acting as an antipyretic.

It is also effective in combating the atony of the digestive system, addressing cholera, and is recommended against remittent fevers, especially when accompanied by splenomegaly, as it has the property of contracting the spleen and thus expelling the plasmodia that nest in it.

The roots and bark of the plant in decoction are useful for infections of the lungs, kidneys, and liver.

It helps in expelling stones from the gallbladder through the gastrointestinal tract.

By dissolving a tablespoon of the juice from the fruits in a glass of water, we obtain a refreshing beverage.

It is used internally for dysentery, malaria, leishmaniasis, hepatitis, gallstones, and kidney stones, as well as for hypertension.

As a homeopathic remedy, it is mainly used for acute symptoms of the urinary system and joints.