Written by Leann Poston, M.D. Sildenafil and tadalafil are oral medications prescribed to treat erectile dysfunction or ED. ED is a common problem that affects as many as 30 million men (NIH Consensus Development Panel, 1993). The prevalence increases with age. ED has many causes, including decreased blood flow to the penis, stress or emotional […]The post Oral ED Medications: An Overview appeared first on Invigor Medical.