Multiple Sclerosis sufferers taking Copaxone?

My mom was diagnosed with MS about two months ago. She was perscribed Copaxone and started taking it a week and a half ago. Since then she has suffered SEVERE dry mouth. It gets so bad she can’t eat, sleep or sometimes breathe properly. I need to talk to someone who has experienced this symptom. I need to find out first of all, what they did to ease the symptom, and also if this is something that goes away with time, or is it a permanent side effect of the drug. Please only personal experience answers…her doctors don’t know much and are little help…
P.S. Copaxone DOES cause dry mouth. It’s listed in the drug explanation as a side effect. It’s at the bottom of the list, but it is there. My mom and I have both read it
I am also perfectly aware that when clinical studies are conducted, if just one person of 500 suffers a specific symptom, that this symptom must be listed in side effects. Obviously my mother is one of the rare cases. I’m not looking for people to tell me it’s abnormal or incorrect, I’m looking for someone who has experienced this as well. Trust me, we are a very throrough and well educated family. We don’t need to be told the obvious. I need first hand experience please.
Also, thank you Maggie F and ktajfl for the links!