PDE5 inhibitors (such as tadalafil, sildenafil, vardenafil, and avanafil) are widely known as “ED pills,” typically used before intimacy. However, in low daily doses, especially in the evening, they may provide broader support for erectile health and beyond. By maintaining nitric oxide–cGMP activity around the clock, daily PDE5i use can enhance nocturnal erections, support penile tissue oxygenation, and potentially preserve erectile capacity with age. Importantly, research also points to possible wider health and longevity benefits, from cardiovascular protection to reduced risk of dementia. This approach always requires prescription and medical monitoring.