Q: I use Clonodine Catapress patches for my BP. When I place them on my chest, my BP and heart rate get very low, but when I put them on my arms or stomach this does not happen. Why does it differ?
A: It is possible that you are getting different rates of absorption of the drug through your skin based on the placement. The patches are supposed to be applied to areas of the body that are clean, dry, and hairless. They should not be applied to areas with thickened skin such as a callous or scar.
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