I have refered to this book so many times. I have diganosed a host of problems and their corresponding 'tissue' or 'cell' salt to clear up health issues. There are 12 main salts in the body. This book will show you, by symptoms, which salt you are lacking in your body. Tissue or Cell salts are not medicines and do not contraindicate with any drugs you may already be already taking. There are several facial shots for each of the twelve salts to show you what you are looking for in your own face and others to diagnose the necessity of a particular salt. Tissue salts are cheap, too. Available online or at most big whole food stores. I've got a lot of homeopathic materia medica books and herbal books, all which I love and do refer to:-- but tissue or cell salts are basic and easy to understand and use and highly effective. I cannot recommend this book enough as tissue or cell salts affect the body at the fundimental physical level and you face really will show which salt you are needing in your system. And no they are not salty! They melt on your tongue and are on the sweet side. Kids don't mind taking them at all. Forget daily chewable vitamins, and get this book. I promise you if you are interested in holistic healing you will grow to depend on this book and reach for it often.