I have used the oregano oil internally and it did bring some of the "critters" to the surface of the skin where some of them worked out along with their blue ink. I am not sure I could say a cure, but certainly a help internally. You can't take a lot of oil as it is so strong. Very irritating to the empty stomach and to work best I found I had to take it that way. A really strong oregano oil can be found at this site:
The Original Old Amish DeWormer Parasite Cleanse: "Old Amish DeWormer", No Pills to Swallow Liquid Formula, Kidney Cleanse, No Tea to Brew Liquid Formula, Self-health products for Family Wellness. Lower Bowel Cleanse, Dewormers, Parasite Cleanse & Ki
I also like their wormer and have used the kidney cleanse at times too. They carry good products. BTW I am not associated with this site in any way except as a customer. Their heart drops I have had good results from too (my friend who was an herbalist had these two years ago--I guess they have not been introduced to the general public yet but will be soon). I still have some of this oil stored in the refrigerator and have started using it again at noon. You put the drops under the tongue. Stings like the devil so you have to work up to the full dose. I think it works well and I noticed a bit more energy yesterday, the first day I started using this formula again. 11am to 1pm is the best time to use heart herbs as this is the heart time of day according to the TCM clock which divides the day into times that the organ systems dominate in the body.