In the rheological study of pharmaceutical gels the rheological properties evaluation at different experimental parameters play an important role for their quality control and also for the optimization of their formulation. In this work, four gels with carbopol 940 1% and tincture of propolis in different concentrations: 1, 3, 5, and 7%, have been prepared. The rheological profiles of the gels t = f(?, Dr) and their spreadability has been analyzed.
