This book describes a way of applying isotherapy which was laid down by Professor Enderlein and has been practised for many years by the author, Dr Werthmann and other practitioners worldwide based on Professor Enderlein's and Dr Werthmann's teachings. Isotherapy is a treatment method which is systematic and therefore always follows the same rules. It is compatible with many other therapies. This book is suitable for any therapist - both beginners and those with greater experience are give the chance to employ the isopathic and immunobiological Sanum remedies appropriately.