Does caffeine improve erections?

"The theory that caffeine can help treat ED may stem from studies on the subject.

One recent studyTrusted Source found that men who drank about 170-375 milligrams (mg) of caffeine per day were less likely to report ED than those who didn’t. The researchers noted, however, that they weren’t able to find a connection between caffeine and increased blood flow. The study was also inherently biased. The data came from the National Health and Nutrition Examination Survey. More research is needed to confirm this study’s findings.

Drinking a few cups of coffee per day to treat ED would be an attractive solution for some people, but there isn’t enough evidence to conclude that caffeine is helpful in treating ED."

Source: Healthline, Sexual Health