This brand is recommended in Marilyn Shannon's book Fertility, Cycles and Nutrition, and after some years of searching and trying other brands and combinations, I have come home again to this one, which has been a lifesaver for me. My search is over. It gives me the right balance of vitamins and minerals I need. In addition to some Traditional Chinese Medicinal herbs prescribed by a practitioner, this has helped regulate my cycles, which were very irregular, and has restored energy and balance. I depend upon them now. I have only found them online, so they are a bit hard to come by. I will only ever use the CAPSULES now, however. I was using the tablets, but choked on one at least every day, and began to develop anxiety and difficulty swallowing any pill, no matter how small. I am so grateful they are available in capsule form as otherwise I would have had to stop taking them altogether, which would have meant buying dozens of vitamins and minerals separately to get the same levels this offers in six pills. I do supplement with a few other vitamins, and my Chinese herbs, but I depend upon these for my base.