Dr Isabel Wilkerson has been working on the male erectile issues for two decades. Her specialty is male physical disorders and impotency issues. She has led several teams of doctor in medical institutions on male sexual health. Dr Wilkerson is of the view that predictable drugs which are approved by FDA are the best for male erectile issues. Her medical observation on males gives her confidence that sildenafil citrate 200mg is the best dose for males with mild to higher erectile degree. Currently, Dr Wilkerson is providing her services of UShealthcarepharmcy.com in guiding a team of medical experts.