This-a-page showed up in my googling, so I figured...yes, good to contribute opinion to old dead thread.
Have observed first-hand the alteration of effect between morning glory seed tea and the same with addition of peppermint oil/enough alcohol to dissolve it. The onset of morning glory is about an hour after consumption, an hour filled with pain and misery. The peak of morning glory is accompanied by sedation and constriction of all sorts and usually takes place around 4 hours post ingestion. With the peppermint the onset was 30 minutes after ingestion, following a brief period of nausea. The peak occurred about 90 minutes after ingestion and began to wear off several hours later, and was accompanied by stimulation and a most remarkable lack of the usual constriction.
This inspired me to consider alternative aldehydes, to see if there was a difference between different aldehyde additives. Sassafras tincture was available, but it contains a variety of nifty molecules so the results from that (8h pretty heavy trip followed by 7h clear and obvious stimulant effect) are pretty much bunk regarding its contribution to theory. I theorized that cinnamaldehyde would be an excellent thing to try, and bada-boom, there's 69ron testing it out. Later on I received e-mail from a friend who tried it and complimented me on the idea. So I decided to try it, and was impressed. The effects are distinctly different from the familiar woodrose - similar to morning glory only with usually much gnarlier physical side effects - with just the tea there is the hour of misery followed by initial effect at 1h, rising to peak at 5h which suddenly drops off at 8h, followed by decent afterglow next day. With cinnamon oil it took about 30 minutes to first effect, rising to peak at around 3h which slowly subsides from 8-10h leaving only a mild afterglow. And no physical effects, save for a small amount of occasional nausea, which usually dissipates quickly. No constriction. More introspective trip than with peppermint. Also less physical side effects than peppermint, which has less physical side effects than unaltered lsa-containing seed tea.
Another experiment was tried just mixing the oil/alcohol with the seeds and consuming all of it after allowing to soak for around 6h. There were definitely more lsa-like physical effects present with this - I assume due to the cinnamon oil not reaching the alks that are buried deep within the powdered particles. or other component of illness-induction present in seeds is less water soluble than psychoactives. either way, the making tea part is not the thing that changes the pharmacology of it, and neither be the adding a small amount of alcohol to it. its definitely the aldehydes, though whether it's enzyme inhibition or chemical interaction is still up in the air, but what I say is skeptics should consider trying for themselves, rather than posting presumptively in the name of...cultural-information-bias which informs decisions such as being skeptical of new ideas, despite how there's someone who doesn't sound too terribly off his rocker saying, "hey this works". also I am not a vendor of ethnobotanicals or anything, just an interested experimenter.
experiments with german chamomile oil were also awesome, albeit having a definite (chamomile-like) sedative component. Similar feel overall to cinnamon adduct. Also similar to one another in many ways regarding physical effect and psychological effect were the chemically related benzaldehydes. Benzaldehyde produced more nausea and strange digestive effects (pooping funny textures way too frequently throughout trip) and somewhat very mild visual effects, mostly subjective feelings like increased appreciation of art. Vanillin (3-meo-4-oh-benzaldehyde) substantially weakened the effect of the seed tea, with 5 seeds' worth being ineffective, 10 being very very subtle, and 15 seeds worth being still mild, with the only noticeable effects being a sour mood and much more vivid colors than usual, but not in an impressive or necessarily positive way. Cumin tincture containing cuminaldehyde (4-isopropyl-benzaldehyde) was substantially more effective, with small amounts leading to a profound loosening of the atoms. 5 seeds had things definitely rubbery. I was curious to pursue that one further, and there has been a vast multitude of different ideas going on lately which have kept me distracted so far.
Anyway, these mixtures of lysergic acid amides-containing-seeds with aldehyde-containing-plant-extracts each have a different set of pharmacological effects from one another, and this is according to a group consisting of 3-5 friends, so it's looking good for this idea. If only more people would TRY it...there would be fewer skeptics. And so far the best ones are cinnamon (for fans of awesome vibes) and cumin (for fans of visual effects). Though you'll have to make your own cumin tincture.