Your medication, Vylda M (vildagliptin and metformin), is highly unlikely to cause erectile dysfunction; managing your blood sugar actually helps protect your blood vessels. Instead, diabetes itself can affect blood flow and nerves over time, leading to these difficulties. The good news is that this is highly treatable. First, keeping your blood sugar well-controlled is key. Please discuss this openly with your doctor, as they can safely recommend effective treatments, check your hormone levels, or suggest lifestyle adjustments.