It is very common for diabetes to affect blood vessels and nerves, leading to erectile dysfunction. Fortunately, this is highly treatable. The most effective first-line oral medications are PDE5 inhibitors, such as sildenafil, tadalafil, and vardenafil, which work by improving blood flow. These are generally safe, but because you have diabetes, it is crucial to consult your doctor first. They will check for any underlying cardiovascular conditions and ensure these drugs do not interact with other medicines you might be taking, such as nitrates. Keeping your blood sugar well-managed also plays a key role in improving your overall sexual health.