Mugihe ushakisha amacupa yinyongera, Vanson itanga amacupa yumuzungu ya farumasi ahujwe nu rubavu rwera rwa PE.Ibitugu bizengurutse, impande zigororotse, hamwe nifatizo zikomeye bituma amacupa yapakira ibinini ahitamo icyambere mugupakira ibicuruzwa bitandukanye.Hamwe nubwoko bunini bwubunini mumacupa yimiti ya farumasi, ibyo bikoresho biramba birashobora gufasha mugukora umurongo wuzuye wamacupa yinyongera, imiti ya OTC, nibindi byinshi.