Question: How long does olive leaf extract take to work for a recurring sinus infection? I've been taking Barleans Olive leaf extract for 2 days, I'm on my third. My infection hasn't gotten worse but doesn't seem much better either.
Answer: For sinus it will take a few days to kick in. If it is a recurring infection it will have taken hold in all the nooks and crannies of your sinuses. I imagine it will take a week to see a significant improvement.