I just wanted to share that I've tried topomax as well and I also lost weight on it. I was a size 2 at my thinnest.
I didn't feel like it was helping my face pain or migraine or trigeminal neuralgia (whatever you want to classify the pain as)
I've tried other seizure meds as well which didn't help.
I started effexor 3 weeks ago. I take a low dosage (37.5 mg). The pain I experienced was nowhere near what you described but it
was bad enough to throw me into a depressed state. I have 2 sons ages 5 and 3. My youngest has autism and i have to be on all the time.
Anyway, I feel better. I did my research and know that I can't skip a dosage of this medicine and if I go off it, it will take some time.
I have more energy and my mood has improved. I read that this drug helps with neuropathic pain. I think it is working. I had a brief pain episode on Monday. I took a motrin (imitrex works for me as well but others have experienced horrible side effects) and the pain disappeared by the evening.
Usually, these episodes last much longer.
Anyway, credit to my AN surgeon for recommending effexor at my last appointment. I was so desperate for relief.
I haven't experienced any side effects except I feel a bit speedy and I woke up in the middle of the night last night. Nothing a little late night Bravo TV coudn't cure.
Hope you find relief. There is hope. I was almost at the end of my rope with trying remedies and was ready to stop looking.
Take care,
Mary