Also, one doesn't _need_ to use saliva, that's usually only done due to lack of clean water in the amazon (Source: am an IAKP certified practitioner)
I've been trying kambo for ulcerative colitis over the past year. My gastroenterologist is perfectly happy to have me take a variety of medications for the rest of my life, whose safety has only been studied over a six-month period.
Western medicine gets the job done, it's true, but it's time to open our minds to Eastern medicine and so-called "folk medicine." Many of these treatments can complement Western medicine.
In my case, Traditional Chinese medicinal herbs have been clinically proven to enhance the efficacy of drugs used to treat Ulcerative Colitis
Until these Eastern medicine have gone through the same process, it’s just anecdotal evidence.
Given that off-label prescriptions are a thing, it's more medicine that's been proven to a satisfactory degree to be safe enough and to work for something. Lots of Western medicine as actually applied is anecdotal.
Fact is, if they really are beneficial, physicians want to know and are willing to spend time and money to collect data.
Think carefully about all the effects of what you're recommending
Western medicine does seem more concerned with maintenance of the symptoms than treating root causes unfortunately.
Since you mentioned TCM, I'd take a hard look at medicinal mushrooms like reishi and lion's mane as they're said to help with ulcers (I'm not a doctor, definitely do your own research and ask your doctor).