The effects of five antiinflammatory plant extracts on ovoimplantation
was investigated in albino rats. Rats treated with plant extracts fro
m days 4 to 6 (periimplantation) of pregnancy showed either a total ab
sence (20%-40%) or a considerably reduced number of implantations in u
tero. The observation suggests that the use of antiinflammatory plant
extracts during the periimplantation period impairs fertility probably
by reducing the vascular permeability which is an obligate accompanim
ent of normal implantation.