Juniper berries, act on the urinary, respiratory, nervous and digestive systems. They help heal infections of the urinary tract and bladder, and a diuretic. Treating colds and asthma. Juniper berries also help increase the flow of digestive juices, improving digestion, eliminating gas, and relieving stomach cramps. They relieve pain and inflammation, take no more than six weeks at a time, as kidneys may become agrivated. They should be avoided by pregnant women.