I have been taking Adderall xr for a while now. and every time e...

If I had to guess, the side effect you are describing might be the stopping of saliva production caused by Adderall. You may find yourself licking the insides of your mouth, behind your teeth, and even your lips quite a bit more when taking Adderall. And with no saliva to swallow, your throat is probably going to get dried out. MAKE SURE TO DRINK PLENTY OF WATER. Seriously. Sip on it CONSTANTLY. This should help. If not, yes, switching to Methylphenidate (Ritalin-SR) may be something worth considering.