Amisulpiride
Common side effects are : insomnia, anxiety, agitation, drowsiness, bowel upset such as constipation, nausea, vomiting, and dry mouth, weight gain, dizziness, low blood pressure on standing (that can cause collapse), movement problems with rigid muscles or trembling gait
Rarer side effects are : high prolactin hormone levels, slowing of the heart rate, high blood sugar (and even diabetes), and a very rare syndrome causing high temperature, rigidity and collapse.
There are almost certainly other side effects, but those are the ones recognised that anyone has reported when the drug was in clinical trials.
One thought is, why use amisulpiride at this point in time? The
Alzheimers society campaign to reduce such drugs is excellent, and very sensible. We need to question using drugs for all the problems faced. It may well be that amisulpiride doesn't help (and evidence is that these types of medicine help only with aggression, but not with other types of distressed behaviour).