I have two quick experiment results to share....
First, I tried smoking one bong bowl of salvia plain leaf while on one kratom capsule. I waited until almost four hours after taking the kratom though, so it wasn't quite stacked with the peak, but I could still fully feel the kratom at that time. I found this combination to feel incredibly pleasant on the body.... Blissful, even. I have a sore tooth I've been needing to go to the dentist for and the kratom had already taken the pain away from that, and I find opioids to feel more analgesic when I already have some pain for them to take away in the first place. I was feeling good because of that, and then when I started smoking the salvia, every hit (of which I took a few to complete the bowl, spaced out at least a few minutes each) just catapulted the pleasant analgesic effect even further, and I was buzzing all over and felt like I was just starting to slump over in pure narcotic orgasmic sensations. The high convinced me to keep pushing it by smoking the whole bowl in a relatively short time span, and then I leaned back and closed my eyes and tripped unexpectedly hard, not too much in total still but for the amount of plain leaf I had smoked.
I saw a darkly-colored face of a female entity of a similar look to what I tend to see on LSD, which is common for me on salvia. It was 3D and rad a rather shiny and slick texture, but everything was shadowy and in a dark shade of blue, and I was focused on her lips, which were darker than the rest of her face. This part is difficult to remember exactly, but what I remember mainly is that suddenly, her neck began stretching up very high and long in a way that looked rather freakish, and once it reached a certain high which in retrospect seems arbitrary but didn't feel that way at the time, she let out this large scream which I would describe combined with the rest of the context as being something like a banshee scream. It was very bizarre and rather shocking, and I had a split second feeling that when I opened my eyes, I would still see her face in front of mine, but I joked to myself that that wouldn't actually happen, and my imagination was just running wild with the creepiness of it. I opened my eyes, and just for a split second I did see her in front of my face, screaming again, but it faded so quickly that it didn't last long enough to feel like I truly felt it, but I reacted to it emotionally, and laughed (I think...) because I found it funny and similar to a jump scare from an indie horror video game.
Second, I tried smoking one bong bowl of salvia plain leaf while on one kanna capsule. It was something like four days after the aforementioned trip I think. The salvia was not as strong as in the aforementioned trip, but the effect was definite and clear, just kind of light and transparent in my mind's eye. This trip seemed to add support to a theory I had that I believe I mentioned before that smoking salvia while on kanna might force the salvia to take an unusually happy disposition, in the same way that being on kanna does for cannabis highs for me even at powerful levels that would otherwise reliably be anxious for me, which is also something that MDMA did for me and that's one of the things I find comparable between kanna and MDMA. That being said, there was no beautiful and/or overwhelming analgesic synergy between salvia and kanna like there was between salvia and kratom for me; in fact, quite the opposite. The part of salvia that is bizarrely painful in a sort of non-physical but also sort of still physical way that for me is not always present was present this time at a higher intensity than I would generally expect from this dosage of salvia plain leaf, at least most of the time. I remember rolling around feeling like colorful arches were being made either in front of me or from me or something sort of abstractly harder to describe than that, and I could feel the arches forming in real time as I rolled and the weirdly painful dissociative feeling was connected to that, and the whole time I couldn't help but contrast it in my mind to the incredible blissful feelings of the salvia and kratom combination and wish that it felt like that instead.
More importantly though, when I actually took the first hit of salvia and leaned back to let the effects kick in with my eyes closed in bed, I saw a woman with my focus being on her lips again just like in the previous trip, only instead of being shadowy and all different shades of dark blue on a black background, this time the woman was fully realistically colored, her lips were a relatively dark but still bright and vibrant red, and the background behind her was a bright yellow. Instead of stretching her neck up and screaming, she raised her hand up and stuck out a finger with my perspective zoomed into and spun around, and coming out the other side there were suddenly more realistic dream-like forms appearing around me that seemed like women (possibly one of them myself?) walking through a beautiful garden scene, although again this was transparent and my attention wasn't focused on the garden so it's hard for me to remember more than a blur of bright and shimmering colors from it now. Instead, I remember feeling like I was walking down this pathway with another woman with us both dressed in aesthetically pleasing and trippy outfits with bold colors (I remember one very ocean blue one) and, I believe, talking to her in a direct way, but in retrospect the next day now I only really remember with the help of my notes the general theme of the discussion. The themes and feelings I was feeling along with them were largely about social acceptance and witchcraft, and feeling like I was accepted among the witches or revealing myself as one of them or something like that. I found it to have a social bonding sort of feeling that seemed notable to me, given the combo with kanna. Around this time this more dissociative phase of the salvia effects ended, but I continued to feel very disoriented by the combo, and had some very vivid, slick-feeling, and colorful and 3D psychedelic-like imagination enhancement occur a little on when thinking about the reaction I get from cannabis edibles later on, which reminded me of some stuff I saw during my strongest salvia trip yet.
As a side note, oral kanna lasts waaay too long for me. It seems like the part I would really call the main buzz only lasts a handful of hours or so maybe, but I still felt affected by it all the way up until I went to bed last night, and now still the next day as well. This is undesirable for me because the effects that hang around mostly feel like a very long-acting psychedelic (speaking from experience) more on the physically uncomfortable end, where the trip and largely the high have long ended but I still have muscle tension and stomach discomfort leaning towards nausea (that mostly on the first day though thankfully, not so much today) and sort of an uncomfortable headband headache feeling around my head. I didn't plan for this and I don't think I'm really in a good environment or doing the right things to really avoid this discomfort in the best ways, I think in the future I'm probably going to plan to take kanna in a way more like I would take a DOx psychedelic just to be safe, like planning to have a recovery day to just relax on listen to music, play video games, watch TV, etc. Maybe I'll get more used to it and it won't be so bad eventually, but with the degree I can feel the effects still too right now, it definitely makes me want to prepare for it. I didn't get it this bad the first two times I took it though, and I'll say that I'm somewhat curious if some of the lingering effect is brought out by the aftereffects of having smoked salvia. In addition to having smoked salvia yesterday, I smoked it again today to see if it would still have the same sort of kanna synergy as yesterday or not, and the effect was not that notable but distinctly dark in a way more alike the combo with kratom than the previous day's kanna with salvia, so I'm guessing (as I probably already would have) that that synergy only lasts during what I would actually refer to as the main high of kanna. That being said though, since I did also smoke salvia today, I might have a double salvia afterglow bringing out the lingering effects of kanna too, but I am nonetheless still kind of shocked at how much I can still feel it.....
By the way, I'm not trying to say the kanna feels psychedelic really by comparing it to the DOx molecules. I think it's more likely that they just feel similar to me because they are both serotonergic drugs with long-lasting effects and potential body load effects for me. This was my first time taking kanna in the middle of the day rather than the beginning or end too.... It was alright. I think next time I'll aim to take it in the morning again instead though. I still don't completely like it... but I'm interested in its utility so far. Eventually I intend to try combining it with an extract of salvia and not just plain leaf to see how far the positivity-forcing effect I compare to MDMA can go.
I think that's it....
Hope everyone's having good trips.