EXHIBIT 31.3
CERTIFICATION OF CHIEF EXECUTIVE OFFICER
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Mihael H. Polymeropoulos, certify that:
| 1. | I have reviewed this Amendment No. 1 on Form 10-K/A of Vanda Pharmaceuticals Inc.; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| June 10, 2015 | /s/ Mihael H. Polymeropoulos, M.D. | |
| Mihael H. Polymeropoulos, M.D. | ||
| President and Chief Executive Officer | ||
| (Principal Executive Officer) |
