Apparantly this is normal
My lady went from 5mg, to 10mg and had terrible tummy trouble.
However, this was before I knew her
When I first came to stay she was half way through a 28 day second trial of 5mg and then went onto 10mg for a 28 day trial. She was fine, no side effects and now she is on 10mg every evening.
The only thing is, and this may not even be a link. My lady had a suspected infection (I made the thread elsewhere about the adventures of me trying to get a urine sample). This obviously affected her mood. When the infection cleared up she was in a wonderful mood and in fact I would now say that it wouldnt shock me if, based on her mood, she had had this infection for about a month, which would have been at about the same time as when she went from 5mg to 10mg.
Now, Im not saying that the increased dosage caused an infection, or even that the two events are linked. But what I am saying is that it could be possible that you have two unrelated events that happened at the same time, so dont rule out that the side effects of the tablet is not actually a side effect.
However, the doctor is the best one to speak to about this. All I know is that the symptoms of 10mg dosage is not uncommon.