More talkative on medication

Okay, so I have been taking dexamphetamine for a few months.

I have ADD and I can tend to still be chatty without my medication. However, when I do take it I notice I am more talkative. I can control it but I feel more easygoing with my conversations, as if I am able to engage in conversations more easily.

I don’t have any issues with conversations beforehand, I just have noticed i am more talkative and find it easier to conversation.

Is there a reason behind this? Anyone else rate? But my main question is why may this be?