The original Bach Flower Essences is a system of 38 Flower Essences that corrects emotional imbalances: negative emotions are replaced with positive. The Bach Flower Essences are 100% safe and natural and work in conjunction with herbs, homeopathy and medications. They are safe for everyone, including children, pregnant women, pets, elderly and even plants. Living in the past- nostalgic. Homesickness. They lack the ability to change the present because they are constantly looking at the past, usually out of a sense of fear.