Memantine/Nemanda Side-Effects?

This AgingCare site already lists enhanced aggression as a known side-effect of Memantine/Namenda. Does anyone here have experience or further feedback about that? Many mental health doctors actually deny that such a side-effect even exists.

Another website lists swelling of feet/ankles, linked to congestive heart failure, as another potential side-effect. Is this well-known, and has anyone had any experience of it?