Eton Pharmaceuticals, Inc. announced it has entered into a co-promotion agreement with Xellia Pharmaceuticals for the promotion of Biorphen® (phenylephrine HCl), the first and only FDA approved ready-to-use formulation of phenylephrine injection indicated for the treatment of clinically important hypotension resulting primarily from vasodilation in the setting of anesthesia. Xellia’s hospital sales force will immediately begin promoting Biorphen in certain market segments in collaboration with Eton’s existing commercial team. The agreement significantly increases the number of sales representatives actively promoting Biorphen and provides Eton with immediate access to accounts that have already adopted Xellia’s Vanco Ready, a ready-to-use formulation of Vancomycin injection. In addition, Xellia will be expanding its sales force to support the co-promotion. Eton will continue to promote Biorphen to all market segments. Xellia will receive a commission on Biorphen sales realized from certain customer accounts. Biorphen® (phenylephrine HCI) Injection is the first and only FDA-approved ready-to-use formulation of phenylephrine for treating clinically important hypotension resulting primarily from vasodilation in the setting of anesthesia. Ready-to-use Biorphen can be standardized and stocked in operating rooms, emergency departments and intensive care units, as well as in crash carts throughout the hospital. With a three-year shelf life, Biorphen can be stocked throughout hospitals without frequent restocking. The market for ready-to-use phenylephrine injection is estimated to be more than 20 million doses annually. BIORPHEN injection is an alpha-1 adrenergic receptor agonist indicated for the treatment of clinically important hypotension resulting primarily from vasodilation in the setting of anesthesia.