Posted 2/14/2014 4:02 AM (GMT 0)
I have been on as much as 1600mg of gabapentin as well as 300mg of Lyrica (which is a cousin of gabapentin) and I've had issues with both. Neither has helped with my joint pain that I can tell (that's not why I was taking either one, but my joints have been killing me lately). I had the lovely side effect from Lyrica of feeling like I had been hit by a bus at a higher dose, so I now take 150mg/day.
With the gabapentin, I am also pretty sure it has caused constipation issues (it's hard to tell which meds are causing issues... I think Remicade is constipating me a ton as well), but I still really bad constipation, bad enough to need near daily laxatives in order to not get impacted. I had to come down in dosage because I could barely function at 1600mg--I mainly had significant lightheadedness, but felt out of it generally, had a hard time concentrating, forgot words (which is tough when you're a professor). I was supposed to be on 2400mg/day but there was no way that was happening. I stayed at 1200mg for quite some time, then 800mg; I've decided to try and get off it because I see no benefit from it, so I've gone down to 400mg (all of this has happened over months).
Note that I am really sensitive to meds, so I don't think most people have so many side effects. Unfortunately though, these meds aren't doing a ton for my pain that I can tell (or they are and I just have *a lot* of pain!).