Namenda - can anyone ease my mind about taking it?

Hi, i have done some research in to this medication and have come across the following quotes... I have copied 2 negative reviews, below;

"The medication seems to only offer minor results".

"My 87 yr, old Mom was on exelon patch. Dr. then put her on Namenda. After 2 months, she was dizzy, sleepy all the time, and had upset stomach. Noticed no improvement in her condition at all.I took her off and am just using the patch".

This may not encourage you much, but these were the worst reviews i found, so that is pretty good in my book. Much more encouraging are the next few;

Expand this post...

"I am a caregiver for Mom who is 81 and suffering from severe Dementia. She just began taking this medication (3 weeks) with Aricept, which sje has taken for a year. She was sleeping a lot when she first began taking it but today she was speaking and laughing cognitively, which she hasn't done in months. Her eyes are focused and she doesn't have that far away look. I have read many of the reviews here and I encourage people to at least try it as it seems to depend on the individual".

"My husband is on this drug for memory and confusion, he could not balance the check book, would forget where he had been. But after being on it for a short period of time he is doing great! I hope it stays this way!"

"it has help me 99.99%, compared to before I started using namenda".

I hope after reading this you may have more faith in the drug? The worst thing i read to do with Namenda, is in the case of an overdose, this can be extremely serious! But as long as you are responsible and take the med's as prescribed you should be fine. An idea,bearing this in mind, would be to have a chart, and cross off that you have taken your meds immediately after taking them, then if you forget later if you've had your dose you can check your chart to prevent o/d.
If you are still worried, please contact your doctor and talk through your fears. Good luck : )