Good morning ladies ! Opinions please

Ariana • I'm 20 and we're currently pregnant with baby number one. EDD October 28 2015. 😊👶✨👶🎃
So my morning sickness ( really all day sickness) has really kicked in this past week. I'm so nauseous all the time to the point I can barely eat or when I do eat I throw up 😣. So finally I spoke with my doctor and she just gave me a prescription for b6 vitamin and zofran😳. Here's my dilemma I've seen commercials about zofran and my insurance doesn't cover it I'm guessing because it's not FDA approved I don't mind paying for it but my concern is the safety of it. Has anyone been prescribed it and you take it? Did anyone take it in previous pregnancies? If your dr gave it to you would you take it? Please comment your opinions because as nauseous as I am I still don't want anything bad to happen to my baby so I'd just take the b6 if I have to.