Help Using an antipsychotic instead of an antiemetic for the SN method

[dyingisliving]

I already have a prescription for Olanzapine (as part of my medication plan, along with Fluoxetine) which is a second-generation antipsychotic.
Would this still work in place of antiemetics?
I also have some Alprazolam.
If it's not enough, would Dimenhydrinate be strong enough as an antiemetic, since it's OTC?

 

[EmptyBottle]

https://www.nejm.org/doi/full/10.1056/NEJMoa1515725

Olanzapine does double up as an antiemetic (good enough for chemo related nausea), while Dimenhydrinate is said to be for motion sickness.

Alprazolam can act as both a tranquiliser and an antiemetic, according to quick (and surprising) duckduckgo searches.

 

[dyingisliving]

https://www.nejm.org/doi/full/10.1056/NEJMoa1515725

Olanzapine does double up as an antiemetic (good enough for chemo related nausea), while Dimenhydrinate is said to be for motion sickness.

Alprazolam can act as both a tranquiliser and an antiemetic, according to quick (and surprising) duckduckgo searches.

What dosage of each would be effective to follow protocol efficiently?

 

[Pale_Rider]

I belive I read something to that effect in the megathread. forget the specific medications that could suffice