I'm not 100% sure if this worked for my husband and I, but we had been trying for 5 months to get pregnant and no such luck. We used ovulation kits and used preseed & I even took prenatal vitamins...nothing worked. It was a long 5 months and I couldn't imagine going through it for years! I did tons of research and I came across these and decided to try them. I purchased them on Amazon for $30 each and my husband and I took these 2 times a day for 3 weeks. We tracked my ovulation test so I knew when I was ovulating, 1 week later...WE'RE PREGNANT!! The 1 month of using these and we're expecting! I feel strongly that these are the reason we conceived!