| Business | Phone |
| Allergan Inc 110 Cochrane Dr, Markham L3R 9S1 | (905) 940-1660 |
| Novopharm Limited 575 Hood Rd, Markham L3R 4E1 | (905) 475-3370 |
| Pancap Inc 50 Valleywood Dr, Markham L3R 6E9 | (905) 470-6844 |
| Pharmasource Inc 201 Whitehall Dr #1, Markham L3R 9Y3 | (416) 289-2889 |
| Sanofi-Synthelabo Canada Inc 15 Allstate Pky, Markham L3R 5B4 | (905) 513-4444 |
| Solvay Pharma Inc 60 Columbia Way, Markham L3R 0C9 | (905) 944-2480 |
| Wyeth Ayerst Canada Inc 88 Mcnabb St, Markham L3R 6E6 | (905) 470-3600 |
| Clariant Canada Inc 421 Bentley St, Markham L3R 9T2 | (905) 479-4700 |
| Dioptic Laboratories 1405 Denison St, Markham L3R 5V2 | (905) 513-6393 |
| Dimethaid Research Inc 1405 Denison St, Markham L3R 5V2 | (905) 415-1446 |
| Drug Trading Co Ltd 131 Mcnabb St, Markham L3R 5V7 | (905) 943-9499 |
| Fujisawa Canada Inc 625 Cochrane Dr, Markham L3R 9R9 | (905) 470-7990 |