In {TAIL ~ one embodiment}, {HEAD ~ the method} can additionally include forming a barrier layer on at lease a selected portion of the reservoir region for reducing the rate at which the active ingredient is released from the reservoir region 
In
In { TAIL ~ one embodiment } , { HEAD ~ the method } can additionally include forming a barrier layer on at lease a selected portion of the reservoir region for reducing the rate at which the active ingredient is released from the reservoir region
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH