PHENPROCOUMON TTS

The present invention relates to a transdermal therapeutic system for the cutaneous administration of phenprocoumon, comprising an active-substance-impermeable backing layer, an adhesive matrix layer and optionally a removable protective layer, the adhesive matrix layer containing phenprocoumon and at least one matrix polymer, and the content of phenprocoumon in the matrix polymer being ≤7.5 wt. %. By virtue of the low load, it is ensured that the system releases the active ingredient substantially in high release rates, because high thermodynamic activity of the active ingredient is achieved. The present invention also relates to a method for producing a corresponding transdermal therapeutic system.