I have been regularly taking Oil of Oregano for 5 years now. Hedd Wyn is the only brand I will use as it is the best tasting of all I have tried. For me, it is so effective for sore throats, colds, tooth aches and generally keeping my immune system energized. As a result, I never had to take a sick day off from work in over 3 years and I attribute that to Oil of Oregano! In fact, I had the office staff taking Oil of Oregano too. I must say it has improved my health over the years and I believe I am still healing.