Sanofi US to Return Auvi-Q Rights to Kaleo

PRESS RELEASE

BRIDGEWATER, N.J.

,

Feb. 23, 2016

/PRNewswire/ -- Sanofi announced today that the license and development agreement between Sanofi and kaléo, formerly Intelliject Inc., the developer of Auvi-Q^® (epinephrine injection, USP), will terminate later this year. At that time, all U.S. and Canadian rights will be returned to kaléo. Sanofi is in discussions with kaléo on these terms and for an orderly transition plan. Kaléo will evaluate timing and options for bringing Auvi-Q back to market.

The decision to return rights for Auvi-Q aligns with Sanofi's ongoing transformation to focus on critical therapeutic areas in its five global business units: Diabetes & Cardiovascular, General Medicines & Emerging Markets, Sanofi Genzyme, Sanofi Pasteur and Merial. Sanofi US will complete the return and reimbursement process associated with the

October 28, 2015

, voluntary nationwide recall of Auvi-Q. For more information on the recall, please visit www.Auvi-Q.com.

Indication

Auvi'Q^® (epinephrine injection, USP) is used to treat life'threatening allergic reactions (anaphylaxis) in people who are at risk for or have a history of these reactions.

Important Safety Information

Auvi-Q is for immediate self (or caregiver) administration and does not take the place of emergency medical care. Seek immediate medical treatment after use. Each Auvi-Q contains a single dose of epinephrine. Auvi-Q should only be injected into your outer thigh. DO NOT INJECT INTO BUTTOCK OR INTRAVENOUSLY. If you accidentally inject Auvi-Q into any other part of your body, seek immediate medical treatment. Epinephrine should be used with caution if you have heart disease or are taking certain medicines that can cause heart-related (cardiac) symptoms.

If you take certain medicines, you may develop serious life-threatening side effects from epinephrine. Be sure to tell your doctor about all the medicines you take, especially medicines for asthma. Side effects may be increased in patients with certain medical conditions, or who take certain medicines. These include asthma, allergies, depression, thyroid disease, Parkinson's disease, diabetes, high blood pressure, and heart disease.

The most common side effects may include increase in heart rate, stronger or irregular heartbeat, sweating, nausea and vomiting, difficulty breathing, paleness, dizziness, weakness or shakiness, headache, apprehension, nervousness, or anxiety. These side effects go away quickly, especially if you rest.

You are encouraged to report negative side effects of prescription drugs. In the US, contact the FDA by visiting www.fda.gov/medwatch or call 1-800-FDA-1088. Please click here for Full Prescribing Information.

About Sanofi US

Sanofi, a global healthcare leader, discovers, develops and distributes therapeutic solutions focused on patients' needs. Sanofi has core strengths in diabetes solutions, human vaccines, innovative drugs, consumer healthcare, emerging markets, animal health and Genzyme. Sanofi is listed in

Paris

(EURONEXT: SAN) and in

New York

(NYSE: SNY).

Sanofi is the holding company of a consolidated group of subsidiaries and operates in

the United States

as Sanofi US. For more information on Sanofi US, please visit http://www.sanofi.us and http://www.news.sanofi.us/social-media or call 1-800-981-2491.