I may recommend Ovulation Induction (OI) for my patients who rarely or never ovulate. There are two methods that can be used to stimulate ovulation: fertility tablets or injections of follicle stimulating hormone (FSH). The goal is to stimulate preferably one or two ripe follicles. When the size of the follicle and the oestrogen level suggests that the follicle is ripe, another hormone is administered which releases the egg (ovulation).