Adderall makes me quiet and antisocial...is this normal?

I have been taking adderall for a couple of years now after being diagnosed with it in college. It works wonders for me, especially with organization, memory ect. and my hyperactivity. The only problem is, whenever I take it, I lose any desire to talk to anyone or be social. Is this normal? I am already kind of an introverted person, and I was uming when I took it that I would be more outgoing. I took too high of a dose once and felt oddly euphoric but regular social-wise. My daily dose has obviously been adjusted and I notice this phenomenon...has anyone else had this experience?