Zudena does not automatically cause an erection but works in combination with sexual arousal. When you are sexually stimulated, Zudena helps achieve and sustain an erection. Zudena is a useful medication for treating erectile dysfunction, improving blood flow to the penis and helping men achieve and maintain an erection during sexual activity. It is typically taken on an as-needed bas... https://www.medypharmacy.com/zudena-100-mg-tablet-care-of-sexual-issues/