Gingko Balboa: can grow to a tree but is kept as a shrub for producing leaves that are used in herbal preparations. Gingko Balboa is Black Diamond Force reported to improve circulation and this improved blood flow can improve erectile dysfunction and overall sexual health. Milk thistle: acts as a detoxifier and thus improves your whole body health. Improving your general health will also mean improving your reproductive health which leads to healthier sperm, more of them and healthier sperm motility.