| Business | Phone |
| Walgreens 1490 Mexico Loop Rd E, O Fallon 63366 | (636) 978-1886 |
| Walgreens 2920 Highway K, O Fallon 63368 | (636) 978-2432 |
| Walgreens 7422 Highway N, O Fallon 63368 | (636) 625-5010 |
| Walgreens 920 N Main St, O Fallon 63366 | (636) 379-2634 |
| Walgreens 9495 Mexico Rd, O Fallon 63366 | (636) 379-4130 |
| Unity Pharmacy 5551 Winghaven Blvd, O Fallon 63368 | (636) 695-2555 |
| Reese Drug Store 121 Ofallon Plz, O Fallon 63366 | (636) 272-4511 |
| Mc Kesson Corp 1 Commerce Dr, O Fallon 63366 | (636) 970-1991 |
| Gasaway Pharmacy 2435 Highway K, O Fallon 63368 | (636) 240-5803 |
| Dierbergs Family Pharmacies 2979 Highway K, O Fallon 63368 | (636) 379-8910 |