No idea why one side of your body seems to be responding and the other isnt. You should try Zinc Sulfate which is a liquid form and is better absored by the body. The glucconate form is appparrently the Cheap form of zinc. You also could try Wateroz Zinc which is angstrom in size liquid and can get inside cells. I think the best zinc in a pill form is OptiZinc. By the way I notice I cant take zinc (pill or liquid) on a empty stomach as I will get stomach pains.
Im going to start upgrading my Zinc use with Wateroz and Sulfate since I already have them on hand. Since they are liquid I bet you could also rub them on the warts with a Q-tip and get a result, I never tested this however.
Zinc kills bacteria in your body. I notice I have less body order smell when on high zinc.