Side Effects of Memantine
In clinical studies, the most commonly reported side effects of memantine included high blood pressure, dizziness, headache, and confusion. Side effects are generally minor and do not require medical attention in most cases. However, there are some memantine side effects that are potentially serious and that should be reported to your healthcare provider, including hallucinations, an allergic reaction, and painful or difficulty breathing.
As with any medicine, side effects are possible with memantine hydrochloride (Namenda®); however, not everyone who takes the medication will experience side effects. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or can easily be treated by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with memantine. Your healthcare provider can discuss a more complete list of memantine side effects with you.)
Some side effects with memantine, while occurring infrequently, are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
- Painful or difficulty breathing
- Signs of an allergic reaction, such as:
- An unexplained rash
- Swelling of the mouth or throat
- Difficulty breathing.