Absorption Efter første applikation af Fentanyl- ratiopharm øges serumkoncentrationen gradvist, idet den generelt udjævnes efter 12- 24 timer, hvorefter den holder sig temmelig konstant i resten af den 72 timers applikationsperiode.
Absorption After the first application of Fentanyl-ratiopharm, serum fentanyl concentrations increase gradually, generally levelling off between 12 and 24 hours, and remaining relatively constant for the remainder of the 72-hour application period.