Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders
Antares Pharma, Inc.:

We consent to the incorporation by reference in the registration statements (Nos. 333-20389, 333-40483, 333-64480, 333-111177) on Form S-8, registration statements (Nos. 333-61950, 333-96739, 333-103958) on Form S-3 and registration statement (No. 333-109114) on Form S-2 of Antares Pharma, Inc. (formerly known as Medi-Ject Corporation) of our reports dated March 16, 2005, with respect to the consolidated balance sheets of Antares Pharma, Inc. and subsidiaries as of December 31, 2004 and 2003, and the related consolidated statements of operations, shareholders’ equity and comprehensive loss, and cash flows for each of the years in the three-year period ended December 31, 2004, and the related financial statement schedule, which reports appear in the December 31, 2004 annual report on Form 10-K of Antares Pharma, Inc.

                                                  /s/ KPMG LLP           

Minneapolis, Minnesota
March 17, 2005