The transdermal delivery system Fentanyl TDS was launched in Hungary under the trademark Dolforin®, in its four available strengths: 25 mcg/h, 50 mcg/h, 75 mcg/h and 100 mcg/h.

In Germany, the first european market of this product, a Mutual Recognition Process including 11 countries has been started in the second half of 2007 and it is currently ongoing.