Excellent – We were trying to conceive for 25 months before we started taking these. Although my cycles were not too bad prior to taking these, once I started taking these I had two proper 28 day cycles and fell pregnant. I know of others that have fallen pregnant within a few months of taking them. this product was recommended to me by some friends from a parents group. I was glad I could purchase them from our local supermarket and not have to drive around trying to find them the price is quite high for a months supply. It would be good if they were sold in more than a single months supply.