My education and degrees are in Holistic Nutrition, Traditional Naturopathy and Herbology. Why I mention that is because I do extensive research on any vitamin, mineral or supplement that I take. Upon comparing the ingredients of 100's of different multivitamins I chose LifeSource Vitamins and Minerals because of their natural, whole food ingredients and the amount that is in each tablet. I also chose LifeSource All Natural Antibiotic because of the same reason. Having taken them for a few years now I know how effective they are and how they help me to achieve optimal health. I would never use anything else.