About Us

  • Powers Compounding Pharmacy is a compounding pharmacy that has been serving O'Fallon, MO, since 2011. We offer a wide range of services customized to help you meet all of your medical needs, including compounding, delivery, durable medical equipment and more.

Our Mission

  • Your wellbeing is our top priority and we strive to ensure you're feeling confident and comfortable by answering all of your questions. Make Powers Compounding your pharmacy, and experience the difference individual and genuine care will make in your healthcare experience.
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Meet Our Pharmacists


Sharlene Powers, RPH

Sharlene has a Bachelor's in Science Degree from St. Louis College of Pharmacy and has over 25 years of experience in retail and compounding pharmacy. Sharlene is passionate about caring for her patients and meeting their healthcare needs as a resource for information. She loves spending time with her family and fur babies. When time allows, she enjoys playing the violin and crafting.

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Randy Powers, RPH, FAARM, ABAAHP

Randy has a Bachelor's in Science Degree from the St. Louis College of Pharmacy and is a Certified Specialist in Hormone Therapy and Pharmacogenetics/Nutrigenomics. He feels that a person's health and wellbeing is a combination of body, mind, and spirit. Randy has had several certifications in compounding with PCCA and has been in a pharmacy setting for over 25 years, compounding and retail. His love for knowledge has taken him to get a fellowship in functional and anti-aging medicine and he continues to use that knowledge to better the patients' welfare. He has a wonderful family who has been a great support system to his work. Randy loves pets, running, weight lifting, going to the movies, hiking with his dog, and meditating.

Bennett McCormick, Pharmacy Technician

Bennett is a licensed pharmacy technician and certified immunizer who started with the pharmacy in sophomore year of high school. They assists with compounding, immunizing, and have grown quite fond of the patient care aspect of working in the medical field. Bennett is in school to become a registered nurse and has particular interest in family medicine.

Conner Walkenhorst, Pharmacy Compounding Manager

Conner started with Powers as a young man that was an Army Reserve. After several years balancing pharmacy training and working as military police, he is now the pharmacy compounding manager and is dedicated to taking care of patients using his skills for accuracy and efficiency. When Conner has down time he enjoys hanging out with friends, gaming, and hanging out with his fiancée and their fur babies, Mazie and Nezuko.

Nancy Podhorn, Certified Pharmacy Technician

Nancy joined Powers Compounding Pharmacy as a Certified Pharmacy Technician in 2021. As a retired registered nurse and 14 years experience as a pharmacy technician, Nancy has an extensive knowledge about healthcare. Nancy Now is her beloved nick name from her co-workers because she likes to get things down NOW! Nancy loves meeting new clients and problem solving to fulfill a patients healthcare needs. In her spare time, Nancy enjoys trying new restaurants with her husband, traveling, and always makes time for her extended family and friends. Her motto is Bee Kind and she tries to portray that on a daily basis with her thoughtfulness.

Isabel Storey, Medical Liaison Pharmacy Technician

Isabel started working here while in high school and off-and-on during college. She received a BA in Biology and a minor in Spanish and had many adventures with exotic animals in zoos and aquariums before making her way back to medicine. In addition to pharmacy, she has worked in the Whole Foods supplement department and is personally a lifelong fan, and patient, of functional medicine. Now she is our Medical Liaison and resident “Supplement Queen”.