Like your doctor, your pharmacist plays an important role in helping you maintain your well-being. When you choose Mercy's Pharmacy at Dierbergs Deer Creek Crossing in O’Fallon, located at Highways K and N, you’ll have a pharmacist who can assist you, not only with routine prescriptions but with hard-to-find and hard-to-fill ones as well.
Mercy Pharmacy Services in O'Fallon MO
Liquid flavoring
Flu shots
Immunizations
Injectable medications
Same-day service
24/7 online refills
Related Services
At Mercy, we offer compassionate care for a variety of treatment services, including:
COVID-19 Vaccine for anyone 12+ is now available at Mercy Pharmacy - Dierbergs Deer Creek Crossing. Walk-ins are welcome, or call the pharmacy to schedule an appointment.
MyMercy+
Manage Prescriptions Online 24/7
Use your MyMercy+ account to quickly refill or renew. Download here.
