How much do I need to consume?
Roughly speaking, a human would need to eat about 1/10th of his or her body weight in typical chocolate candy. You'd also need to do it all rather quickly, because the half-life of theobromine in the human body is not very long. More realistically, you might need to consume 1/5th of your body weight over the course of a day.
This is dangerous. You could die. But it's also a hell of a lot of chocolate. You are not a dog.