This historical remedy made from the source of quinine, started Samuel Hahnemann's research which eventually led to homeopathy. It aids conditions weakened by flu, diarrhea, vomiting, stomach flu, injuries with blood loss, or breast feeding (loss of blood or other body fluids) and related symptoms of fatigue, flatulence, headache or indigestion. In the most striking Cinchona cases, the individual becomes very irritable, does not want to be touched, and often feels worse after eating because the body’s remaining energy is taxed.