The pellets consist of estrogen or testosterone, plus a small amount of binder. At Fountains Medical, we only use the highest quality pellets which are manufactured in an FDA registered 503B pharmacy, held to the strictest standards for purity, potency, and consistency. The steroid ring that forms the basis of the bioidentical hormone is harvested from soy or yams. If you are interested in learning more about the BioTE Method of bioidentical hormone replacement therapy using the BioTE Method, or would like to book a consultation with our doctor, we would like to hear from you! You can give us a call at (601) 228-0568, or you can make an appointment to visit Fountains Medical at 120 Fountains Blvd Suite 2002, Madison, Mississippi. We look forward to meeting you!