sigh what I wrote wasn't saved because my computer closed the tab...
Basically;
Do your own research, don't take only my word.
AEs aren't required, just a reminder. Also test whatever you're taking before hand.
Meto is much better for SN; allows it to absorb faster while also acting as an AE.
Zofran (ondansetron) would probably reduce some nausea, but wouldn't work nearly as well as Meto.
Take Zofran if it feels like it'd bring you some peace of mind, but yeah, Meto is much better.
Meto is a dopamine blocker (which is what you want) while Zofran is a serotonin blocker
(Zofran would work better if your nausea was linked to Serotonin release, but SN isn't. Meto in general works a lot better because of that.)
Sorry if this doesn't answer your question / conceerns that well, small headache atm.