Sage is an herb. The leaf is used to make medicine. Sage Leaves C/S is used for digestive problems, including loss of appetite, gas (flatulence), stomach pain (gastritis), diarrhea, bloating, and heartburn. It is also used for reducing overproduction of perspiration and saliva; and for depression, memory loss, and Alzheimer's disease. Women use sage for painful menstrual periods, to correct excessive milk flow during nursing, and to reduce hot flashes during menopause.