| Business | Phone |
| 1641 Corp 1641 W Chicago Ave, Chicago 60622 | (312) 666-9551 |
| Alva-Amco Pharmacal Inc 6625 N Avondale Ave, Chicago 60631 | (773) 792-0200 |
| American Medical Svc 102 S Michigan Ave, Chicago 60603 | (312) 432-0250 |
| American Vitamin Co 400 N Oakley Blvd, Chicago 60612 | (312) 492-9100 |
| Amersham Health 1053 W Grand Ave, Chicago 60622 | (312) 243-0787 |
| Tyler Andre 5820 S Artesian Ave, Chicago 60629 | (708) 758-0157 |
| Aptex Inc 5247 N Mulligan Ave, Chicago 60630 | (773) 763-5585 |
| Best Value Pharmaceuticals 5222 N Elston Ave, Chicago 60630 | (773) 283-3225 |
| Genentech Inc Midwest Region 8420 W Bryn Mawr Ave # 880, Chicago 60631 | (708) 492-1926 |
| Brothers Pharmaceutical Inc 7036 W Higgins Ave, Chicago 60656 | (773) 631-1701 |
| Ferma Logic Inc 2201 W Campbell Park Dr 317, Chicago 60612 | (312) 738-0050 |
| Caps 821 N Lessing St, Chicago 60622 | (312) 829-1330 |
| Cardinal Distribution 451 N Oakley Blvd, Chicago 60612 | (312) 733-8556 |
| Chicago Medical Equipment 6230 S Central Ave, Chicago 60638 | (773) 585-1126 |
| Dermaide Research Inc 1255 N Sandburg Ter 2401, Chicago 60610 | (312) 649-7220 |
| Clinical Development & Admin 70 E Lake St 5, Chicago 60601 | (312) 251-4580 |