Just replied to Vonnie and it reminded me to post this. Met up with my best friend yesterday who also has a tooth abcess. Her dentist asked what medication she was on..and advised her to switch from Amlodopine ( for blood pressure) back to her previous meds. He said he often sees people with these on this med,and indeed it is listed as a side effect on the info sheet.
Not sure if it affects every one in this way of course,but thought to share it.