I take the oregano caps, and they seem to be working for me. When I take them, I notice a bit of heat sensation (like my chest feels a little warm for a couple of minutes), and I cough up a lot of stuff. I felt a little cr*ppy for the first week of taking them, but am feeling really great right now. The caps I take has 150 mg of oil of oregano, and I take one once a day.