Hi Inertia I know how you feel.
I suffered from HG with both my pregnancies, but only lasted until about 18 weeks. Still threw up every morning after that until the pg was over but I was usually ok as long as I ate soon after. Before that it was hell though. I was in and out of hospital during this time. They would just put me on a drip for a few days until I was well enough to eat a piece of toast, then I was sent home only to be back within a few days or even hours. I got so depressed and sadly it is mostly the reason I won't be having any more kids.
Unfortunately, Maxalon did nothing to ease the symptoms for me, even when administered through a drip, it only made me extremely tired. I hope you get some relief from it.