It is the Harmalas that cause the nausea/vomiting, DMT does not. I'm telling you. Also if DMT did cause nausea/vomiting, you would expect more people to get nauseous and vomit from vaping/smoking it, but i've only heard of that happening, and experienced it personally, by vaping/smoking Changa (which it's because of the Harmalas).
Do some actual experimentation, and you will see that the Harmalas themselves can cause nausea/vomiting. And take DMT with Moclobemide and you will see there's no nausea/vomiting from the DMT. It's the Harmalas, it's something about the Harmalas even if you only get nauseous and vomit when the DMT is consumed. I've been there, i've experimented a lot, and i know the facts on this matter.
Believe what you want, but don't draw conclusions unless you've done some heavy experimentation as i have.
I've had the Harmala extract, as well as Rue itself, make me nauseous and vomit plenty of times on it's own without DMT, i've worked with it extensively and consumed it very regularly. I should know.
The only sure fire way i know to get rid of the Harmala-related nausea/vomiting and thus have nausea/vomit-free experiences, is by building up the Harmala reverse tolerance by consuming the Harmalas/Rue/Caapi regularly (at least 3 times a week at a good strong dosage) and as the Harmalas get stronger back the dosage down bit by bit as you go along, and within a couple weeks or so the nausea/vomiting will go away. If you can't do that, then idk what you're gonna do to get rid of the nausea/vomiting.
Also if trying Lemon EO for nausea/vomiting, it should be taken about an hour or so before taking Aya/Pharma, and about 6 drops should be used, in a capsule. You may have to consume the Lemon EO for a few days and let it build up in the body, but i think it should be fine taking it from the get go. It's definitely helped with the nausea/vomiting for me, but may alter the experience. Ginger has never worked for me. Cannabis is really good at helping with nausea/stomach pain but won't stop the purge.
Also remember if you try Zofran, make sure you try a low dose first, because Harmalas inhibit CYP2D6 and CYP1A2 which metabolizes the Zofran so a lower dosage would be needed than what's in the actual tablet. I made the mistake of taking either 4 or 8mgs of Zofran with Pharma and it turned into a very horrible and altered experience that didn't feel right at all, but say 1 to 2mgs, maybe even 500mcgs might be able to help, idk. But i personally would definitely recommend building up the reverse tolerance if you can, it's really not that difficult to do and is greatly rewarding with much less side-effects.
I'm trying to save other people the trouble of having to figure things out for themselves, even though it's what i did and it was pretty rewarding. But i figured i'd try to help others out so that they don't have to do nearly as much experimentation as i had to do, so when i say the Harmalas cause the nausea/vomiting, i'm telling you the truth. It's the Harmalas/Rue/Caapi that are labeled as purgatives, not the DMT-containing plant. With Moclobemide, DMT causes no nausea or vomiting ime, i've only vomited due to intensity. DMT with Harmalas though, can trigger the Harmala purge, regardless if you're using extracts. This has been discussed on this site a lot from what i've seen, and many people agree that it's the Harmalas that cause the nausea/vomiting, not the DMT. Some people think it's the DMT because it only happens when they consume the DMT, but if you experiment around with the Harmalas enough, and perhaps even try DMT with Moclobemide, you will see (and hopefully in the process understand) that the Harmalas cause the nausea/vomiting, DMT may trigger it, but ultimately it's the Harmalas that cause it. If you build up the Harmala reverse tolerance though, the stomach seems to be desensitized to the purgative effects of the Harmalas, and thus DMT can be consumed with Harmalas without the side-effects. If you can't see that it's the Harmalas that causes the nausea/vomiting, then i suggest you experiment around quite a bit and see for yourself.