Topamax and neurosurgeon

I've been on Topamax since just Tuesday, 10/9/07. I find that I get very tired a couple hours after taking it and I have horrible nightmares and very dark thoughts, too. Diet coke tastes so HORRBILE which is bad because I loved my diet cokes, but then again I guess that's good b/c I need to stop drinking them anyway. My worst side effect is that I have horrible mood swings. Is this normal? Is this going to go away over time? Because if not, I'm going to stop taking it now. This is not like me and I am not going to subject my family to this - losing weight is not THAT important to me. Thanks for any help. :(

P. S. I'm taking 25 mg in the morning, afternoon and evening.

Guys this isn't a side effect it is a good option. Why the doctor put me on this is beyond me, but from reading the comments below this may help some of you it is worth looking into rather than poisoning your body with drugs. Google NUCCA chiropractic. It has to be NUCCA not regular chiropractic. Believe me I have been dealing with pain for years from a car accident and have done EVERYTHING to stop the pain. I had the headaches under control with NUCCA after many years until I broke a fusion plate in my neck. Still the chiropractor was able to keep them to a reasonable amount but every time my alignment went out I got a headache, go to the chiropractor, put me back and I was ok within hours. If I hadn't broken the plate, I would be good to go. So as I sit here sick as a dog after throwing the pills in the garbage I am wondering where a broken plate in your neck needs mind-altering medication. It is worth a try guys at least my chiropractor will turn you away if he can't help I ran into someone at my neurosurgeon's office who he turned away, he is credible not all of them are you have to judge their character and talk to the patients and see what they think. I HIGHLY recommend it over these side effects.