Ahrens J, Wiedenbach M
Schweiz Med Wochenschr. 1984 Jun 23;114(25):932-4.
In a 6-month placebo-controlled double-blind multicenter study in 230 patients with recurrent respiratory tract infections, the therapeutic efficacy of Broncho-Vaxom was demonstrated by comparing infection incidence and severity as well as antibacterial medication. Investigators and patients agreed that Broncho-Vaxom exerts a significantly greater protective effect than placebo. Reports of side effects were more frequent with placebo as compared to Broncho-Vaxom.
