Når taladafil 10 mg blev administreret med theophyllin (en non- selektiv phosphodiesterase inhibitor) i en klinisk farmakologisk undersøgelse var der ingen farmakokinetisk interaktion.
When tadalafil 10 mg was administered with theophylline (a non-selective phosphodiesterase inhibitor) in a clinical pharmacology study, there was no pharmacokinetic interaction.