shortness of breath on Gabapentin

Every time I go above 400 mg a day my face gets puffy and I get some difficulty breathing. I am almost sure it is water retention. Anyone else have any experience with it?  At 900mg  my feet swell.

Water retention was one of the main reasons I had to stop pregabalin. When I did stop, I lost 5kg within 2 days (obviously held as fluid).

The multitude, and diversity of sides with this and other similar drugs, never ceases to amaze.  It makes me retain fluids to some extent also.

...forgot to say-I am on 100omgs Gaba. It's doing zero. Don't know why I bother.