Taking olive leaf extract while taking the wormwood, black walnut and cloves formula will make it even more effective, but may give you extreme side effects from too strong of a die off reaction. If you get very little reaction from taking the wormwood, black walnut, and cloves(Wormwood Combination), then after a week or two of that you could start the olive leaf extract.

If you do decide to get olive leaf extract, get a potent one. The weak ones I have tried in the past were almost worthless. The most potent one that I have tried so far is the Olympian brand olive leaf extract. It you shop carefully, you can get it for around $9 per bottle of 60 capsules. I have not tried any of the very expensive olive leaf extract.