[Co-tetroxazin levels in the prostatic secretion of patients with subacute and chronic prostatitis].

Plasma and prostatic fluid concentrations of co-tetroxacine (TXP/SDZ) were investigated on 12 patients with subacute or chronic prostatitis. Co-tetroxacine was given perorally, 2 x 2 tabl. daily. - Tetroxoprime-(TXP-)concentrations in prostatic fluid were 4.2 micrograms/ml and 4.5 micrograms/ml 3 and 6 hours after peroral application (days 2 and 3) respectively. Compared to the concentrations of TXP in the systemic fluid there was an increase by the factor 3 to 4.3. - The corresponding concentrations of sulfadiazine (SDZ) in prostatic fluid were 11.6 micrograms/ml and 10.0 micrograms/ml - i.e. 62-70% of the plasma concentrations.