this is my first posting on this site. I am curious on what people think about natural medecinal plants that are not normally approved by the FDA or whatnot. Honestly, I haven't done much research on the matter, nor did I look thoroughly in this forum if there are past discussions about this.

The reason why I'm interested about this is because recently my brother who suffers from Ulcerative Colitis started taking different natural pills & liquids to fight the disease. The doctor who prescribed him this array of medecine practices Iridology*. This is why I feel skeptical about his medecine. I'm not against the natural medicine, even if it may not be approved by the FDA. I am only wary, because they are prescribed by someone who practices a pseudoscience.

It would be cool if someone has a good knowledge on plant medecine or if someone can guide me towards a website that deals with this stuff. Any info is appreciated :)