Consent of Independent Registered Public Accounting Firm
We consent to the reference to our firm under the caption “Experts” in this Registration Statement (Form S-3) and related Prospectus, dated November 2, 2017, of Ironwood Pharmaceuticals, Inc. for the registration of common stock, preferred stock, warrants, units, and debt securities and to the incorporation by reference therein of our reports dated February 22, 2017, with respect to the consolidated financial statements of Ironwood Pharmaceuticals, Inc., and the effectiveness of internal control over financial reporting of Ironwood Pharmaceuticals, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2016, filed with the Securities and Exchange Commission.
| /s/ Ernst & Young LLP |
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Boston, Massachusetts |
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November 2, 2017 |
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