Solanum Nigrum is a perfect medicine for spleen diseases also. The anti-bacterial properties of Solanum Nigrum kill the bacteria in the body that causes illness and diseases. The plant works on your body to improve the immune system and fight with microorganisms. The herb plant strengthens spleen muscles and calms down the stomach ulcer. Black nightshade leaves, turmeric powder, cumin seeds, a pinch of salt with gingelly oil can reduce the body heat.