Avana 100 mg is not directly causing penile erections but affects the response to sexual stimulation. It contains Avanafil, a type 5 Phosphodiesterase inhibitor. It is used to treat impotence in men. During sexual inspiration, nitric oxide is released into the erectile tissue of the penis, activating the enzyme grandly cyclamen. Don’t use the drug more than one time every 24 hours.
https://www.flatmeds.com/product/avana-100-mg/