Indication: These are the special formula for the men to increase the sperm count, sperm motility, sperm morphology, sperm vitality and sperm quality in order to get pregnant. ManlyPro 1 and ManlyPro 2 are for Yang Deficiency; ManlyPro 3 and ManlyPro4 are for Yin Deficiency. Your first choice is taking ManlyPro 1+2, if you are not success after trying for seven months then try ManlyPro 3+4.