PRESS RELEASE

Prepays $45 million credit facility due 2018

SAN DIEGO--(BUSINESS WIRE)-- Retrophin, Inc. (NASDAQ:RTRX) today announced the closing of the agreement to sell its Rare Pediatric Disease Priority Review Voucher to Sanofi (EURONEXT: SAN and NYSE: SNY). Under the terms of the agreement, Retrophin has received a payment of $150 million, and will receive two additional payments of $47.5 million in 2016 and 2017.

Retrophin also announced the prepayment of its $45 million credit facility due 2018, issued on June 30, 2014. The Company made a $47.3 million payment in full for all principal, accrued interest, and prepayment premium, as required by the terms of the credit agreement.

"Closing the sale of the voucher significantly strengthens our balance sheet", said Stephen Aselage, Chief Executive Officer of Retrophin. "The additional cash and prepayment of our high-interest credit facility provide Retrophin with considerable operational flexibility to devote resources to the progression of our pipeline and the pursuit of additional rare disease assets."

About the Rare Pediatric Disease Priority Review Voucher Program

The program is intended to encourage development of new drug and biological products for prevention and treatment of certain rare pediatric diseases. A voucher may be issued to the sponsor of a rare pediatric disease product application and would entitle the holder to priority review of a single New Drug Application or Biologics License Application, which reduces the target review time and could lead to an expedited approval. The sponsor receives the voucher upon approval of the rare pediatric disease product application.

About Retrophin

Retrophin is a pharmaceutical company focused on the development, acquisition and commercialization of drugs for the treatment of serious, catastrophic or rare diseases for which there are currently no viable options for patients. The Company's approved products include Chenodal®, Cholbam™, and Thiola®, and its pipeline includes compounds for several catastrophic diseases, including focal segmental glomerulosclerosis (FSGS), pantothenate kinase-associated neurodegeneration (PKAN), infantile spasms, nephrotic syndrome and others. For additional information, please visit www.retrophin.com.

Forward-Looking Statements

This press release contains "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995, regarding the research, development and commercialization of pharmaceutical products. Without limiting the foregoing, these statements are often identified by the words "may", "might", "believes", "thinks", "anticipates", "plans", "expects", "intends" or similar expressions. In addition, expressions of our strategies, intentions or plans are also forward-looking statements. Such forward-looking statements are based on current expectations and involve inherent risks and uncertainties, including factors that could delay, divert or change any of them, and could cause actual outcomes and results to differ materially from current expectations. No forward-looking statement can be guaranteed. Among the factors that could cause actual results to differ materially from those indicated in the forward-looking statements are risks and uncertainties associated with the Company's business and finances in general, as well as risks and uncertainties associated with the Company's pre-clinical and clinical stage pipeline as well as its sales and marketing strategies. You are cautioned not to place undue reliance on these forward-looking statements as there are important factors that could cause actual results to differ materially from those in forward-looking statements, many of which are beyond our control. The Company undertakes no obligation to publicly update forward-looking statement, whether as a result of new information, future events, or otherwise. Investors are referred to the full discussion of risks and uncertainties as included in the Company's filings with the Securities and Exchange Commission.

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Retrophin, Inc.
Chris Cline, CFA, 646-564-3680
Director, Investor Relations
IR@retrophin.com

Source: Retrophin, Inc.

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