Method metoclopramide alternative?

[foreverotting]

Is promethazine an alternative to using metoclopramide?

 

[schopenh]

"and also has weak to moderate affinity for the 5-HT2A,[18] 5-HT2C,[18] D2"
That's from wikipedia. The antiemetics usually have strong affinities with dopamine channels and this drug doesn't, so it's probably some off-label usage for nausea. I recommend checking out stan's guide if you haven't already and going with one of the antiematics on that list:

1. Dromperidone
2. Metoclopramide
3. Olanzapine
4. Alizapramide
5. Chlorpromazine
6. Prochlorperazine