Welcome Kate and congrats on your pregnancy!
I read your other post and responded there,but, I will copy and paste my reply here for you as well.
First, I encourage you to read the sticky at the top of this forum, regarding B6/unison/zofran. It has great info that will answer alot of your questions about dosages, etc .
And it is better to have b6 built up in your system BEFORE nvp or hg sets in, so start on it now!!!!!
About b6 injections.....
STOP hg? probably not, Help to ease it? Maybe. For me, b6 didnt really help, though I never recieved the injections. I think it would all depend on your level of severity with your hg. If you had a mild case, it would be more likely to feel a tremendous amount of relief. If you were a more severe case, and meds dont help much in the first place, it may offer a tad bit of relief from the symptoms of hg, but would not stop it.
I think if there was anything out there that actually Stopped hg, none of us would be posting here.
B6 injections have been discussed here before, so this really isn't new information . Andy, our forum admin, has experience with the details, so I am sure she can offer additional information about the use of them.
Good luck to you as you begin your journey!!!!!!!!!