Alternative generally indicates that the medicine is unproven. However, alt med proponents frequently like to try to claim ownership of proven therapies and treatments used in scientific medicine as alternative, including holism, diet, exercise, massage, physical therapy, etc.
Increasingly, alt med practitioners have been successful in promoting the "integration’ of their nonsense treatments with actual proven medicine, which reminds me of those ads for sugar cereal when I was a kid, which always said, “Part of this balanced breakfast!” Yeah, the completely unnecessary part! They would show fruit, eggs, toast, milk, etc., and bowl of their sugar cereal. Integrated medicine is like that, “A part of this effective regimen of therapy!” Yeah, the completely unnecessary part that has no basis in fact.
We need to keep fact from fiction separate. We need to keep pretend medicine (reiki, acupuncture, therapeutic touch, homeopathy, etc.) away from real medicine.
Is scientific medicine perfect? No, but I’m all for rooting out non-evidence based practices that linger there, too. But that doesn’t’ mean you can just fill the holes with a different, unproven therapy like classic subluxation-based chiropractic.
Then you shouldn’t have a problem in naming one that has been discarded in recent times by alt med practitioners for not working. So, name one. Should be easy if “lots” of treatments have been discarded.
Science is the methodology we use to separate what works from what merely seems to work. Without objective testing methodology that accounts for experimental and human bias, you have no way separate what is true from what merely seems to be true.
So, while a treatment doesn’t need to originate from scientific medicine to be efficacious, it does need to pass scientific muster for you to know with certainly that it actually is efficacious. Keep in mind that every sincere alt med practitioner thinks their modality works, whether it be urine therapy, iridology, stool reading, high colonics to treat cancer, Miracle Mineral solution, cupping, bloodletting, applied kinesiology, alkaline diet to treat cancer. Etc. But only science can tell you which, if any of them, are right. And if you ignore science, you may think you know (as the practitioners think they do) but you won’t actually know.