The Symlin Pen

The FDA approved pre-filled Symlin pens in November of 2007 and Amylin made them available in January of 2008. Previously, it was only available in vials. There are currently two pens available: the SymlinPen 60 and 120. The SymlinPen 60 delivers 15, 30, 45, or 60 micrograms per dose. The SymlinPen 120 delivers 60 or 120 micrograms per dose. Both may be stored at room temperature, up to 86 degrees, after first use.