My sister has severe food poisoning for the past 2 weeks. Constant vomiting for 2 weeks?

I am surprised that the hospital does not put her on IV saline solution, because it is really dangerous to get dehydrated. She keeps vomiting and the more she vomits the more dehydrated she becomes. There is no cure for food poisoning, you just have to keep the patient comfortable and hydrated until it passes. But the key word here is hydrated. Get a second opinion.

There's really not much I can add to the other answers above, they've pretty much covered it all. Just wanted to add that Kevin & Amber are in court at their arraignment (in least in the US) and are waiting for the judge to appear and Michael is going to plead that Kevin be put in a Psych ward at the hospital to keep him safe (remember what happened to him the last time he was in jail) and get him the help he needs. He is also there to plead that Amber be released on bond that I have a feeling Mrs C. who is there will pay for since Amber helped her so much. Not sure what Mrs. C. can do for Kevin, but with all her power & money she will find a way to help.I am sure. BTW, it has been proven that Mrs. C. is indeed Katherine Chancellor and not Marge and she & Murphy are engaged and happily living in the Chancellor Mansion. YIPPEE! So great to see you back and looking forward to seeing your great spoilers next week!

Take her to a different hospital. Food poisoning usually doesn't last that long especially with treatment.

She definitely needs to see a different doctor right away. She should be admitted to the hospital for more testing to find out exactly what bacteria or other germ is causing her illness.

Go back to the hospital. Convince them to let her stay overnight. She can die if this persists any longer.

I would get a second opinion from another Dr. ...also try Webmd.com

is she pregnant?

Tell her to keep her fluid levels up...water, gatorade etc..That'll help keep her hydrated until the doc knows what's going on...