effectiveness quot quot penis enlargement or ointments are usually offered on the Internet. Analysis performed by Flora Research of California and the University of Maryland quot pollutants found in some penis enlargement pills quot. Contaminants found included mold, yeast, dangerous bacterium E. coli, pesticides and lead. [6] Dr Michael Donnenberg of the University of Maryland herbal pills marketed as having quot quot heavy fecal contamination, described could be collected from animals grazing near the plants for herbal ingredients. [7] However, the placebo effect may psychological effect of the users think that has a larger penis and to increase confidence when there is no real change in the size of the penis. [8] Some people have reported that the pills make them feel sexually created, and harder erections, but again no real increase in the penis.