Exhibit

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-228352) and S‑8 (Nos. 333-61132, 333-97375, 333-119257, 333-151941, 333-169569, 333-174863, 333-196799, 333-198794, and 333-218669) of Regeneron Pharmaceuticals, Inc., of our report dated February 7, 2019 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10‑K.