Do you know what qualifies as alternative medicine? Anything that is not medicine.
I mean if I take some herb and (successfully) use it to treat abdominal pain without knowing what that herb is or how it works, would that herb be classified as medicine or not?
I have read description of many medicines and found out that we still don't know how those medicines work. But they are still called medicines.
So what is medicine?
Of course, alternative medicine proponents rarely do randomized controlled trials.
If it can't, then frankly, you don't really know it works.
As for the opposite case - if there was a thing you wanted to test that had a strong effect, then the company that owns the current treatment would happily fund you the tests in exchange for dibs if the tests pans out.