Study Status: Completed
Recruit Status: Completed
Study Type: Observational
Official Title: Agapurin Retard Used in Patients With Smell Disorder- A Post-marketing Observational Study
Brief Summary: Signal processing in the olfactory neuron could be influenced by inhibition of enzymes like phosphodiesterase. Pentoxifylline is a unspecific phosphodiesterase inhibitor. The hypothesis is that pentoxifylline could lead to increased sensitivity to odors.