The silver wolf and the vampire Prince
"All I know is that you need blood to survive, and the younger the victim, the tastier it is."
I shook my head at what she said.
"That’s an old superstition. That’s just a story people tell. The truth is, blood tastes the same, and it depends on the vampire’s taste buds and mood how they experience it."
In reality, we need blood to maintain a healthy body. I wouldn't call it medicine, but rather a supplement that keeps us healthy. Over the last few decades, studies have shown that vampires can survive without drinking blood, but they easily become weak and lose their vitality.