I could have been classified as a "bleeder" a while back. I would have fairly frequent bleeds, with two in particular that were VERY bad and actually scared me, and I thought I might have to go to the ER. Taking vitamin K massively lowered the duration/severity, and frequency of my bleeds. Vitamin K will never fully protect you from bleeds as long as you have bacteria causing infection, and white blood cells congregating in those areas of infection. Of course the best approach is to not have infection in the first place, so inevitably your bleeds go away, instead of not doing anything and just relying on clotting agents. I would have one or two bleeds a month almost guaranteed, sometimes three, regardless what antibiotic I was on. Vitamin K helped to reduce the severity and length of them, but never fully kept them at bay. So I would consider myself a fairly regular "bleeder" I suppose (compared to other cystics I knew). I have been on oregano oil in various forms for 5, nearly 6 months. Out of all that time, I have had only 2 bleeds. Both of them were after I had drank heavily for a couple days back to back, and been in very smoky areas while doing so. While infection and then inflamation is usually the reason for bleeds, self abuse via drinking heavily (dry you out) for a prolonged period of time + exposure to heavy smoke over a prolonged time can do it with no real infection present. Going for most of my life with regular bleeds, then only having 2 bleeds within 5-6 months with no other treatments present besides me treating myself with the oregano oil, would lend credit to the oil being much more of a helpful substance than a harming substance.
Of course this isn't a universal application. All people are different with potentially vastly different lungs/body chemisty/body flora. And that is why I have 100% from the begining told others to do their own research, ask their doctors, and if they decide to give it a real try, to try it for a month if no negative symptoms present themselves during treatment. If after a month you note considerable improvement in your overall health and how you feel, consider using the oil as part of a regular maintenance. And then have regular doctor visits where you get checked up and do full screening blood work to make sure nothing is wrong on the inside.