(1) Cov tshuaj muaj roj thiab cov tshuaj yaj siab tsis tshua muaj kab yog qhov tsim nyog rau cov tshuaj ntsiav muag. Cov tshuaj siv roj (xws li cov vitamin E) thiab cov tshuaj uas muaj kua lossis ib nrab ntawm cov roj hauv qhov kub yog feem ntau kho los ntawm adsorption, solidification thiab lwm yam thev naus laus zis thaum kev npaj yav dhau los. Qhov ntim tau nce vim qhov sib ntxiv ntawm cov khoom siv pab txhawb nqa xws li adsorbent, lossis cov tshuaj yuav tsum tau kho kom sov thiab ua kom qhuav thaum npaj. Lub sijhawm no, cov tshuaj yooj yim dawb los yog thim tawm ntawm cov khoom siv pabcuam xws li adsorbent, ua rau poob ntawm cov tshuaj tseem ceeb thiab cuam tshuam rau cov nyhuv curative. Txawm li cas los xij, cov tshuaj ntsiav muag yaj cov roj pleev thiab cov tshuaj ua kom tsis muaj roj nrog cov roj ua kom tsis muaj roj los yog ua rau lawv ua emulsion rau kev sau lossis nqus tshuaj, yog li rho tawm cov khoom siv txhawb, tsis tsuas yog miniaturizing npaj, tab sis kuj zam cov teeb meem tshuaj dawb thiab exudation Cov. Xws li vitex roj tsiav tshuaj thiab indomethacin farneside tsiav tshuaj.
(2) tshuaj uas rhiab heev rau lub teeb, tsis ruaj khov thaum raug cov cua sov, lossis tsis yooj yim rau oxidize tuaj yeem ua rau cov tshuaj ntsiav muag. Qee cov tshuaj xws li cov roj uas ua rau kub ntxhov siab rau lub teeb. Qee cov tshuaj siv tau yooj yim ua rau xaim thiab dej tsis haum thaum raug rau cov dej noo noo. Qee cov tshuaj siv tau yooj yim rau oxidize thaum npaj thiab cia. Txhawm rau tiv thaiv cov tshuaj los ntawm decomposing thaum raug lub teeb, cov ntaub thaiv lub teeb xws li titanium dioxide lossis hlau oxide tuaj yeem raug ntxiv rau cov khoom ntim rau kev npaj cov tshuaj ntsiav, thiab lub teeb zoo lub teeb tuaj yeem tau txais. Txhawm rau tiv thaiv cov tshuaj los ntawm kev sib chwv nrog huab cua, cov roj inert tuaj yeem qhia rau hauv kev npaj. Cov khoom siv tshuaj ntsiav ntawm cov tshuaj ntsiav muag yog muaj li ntawm glycerin thiab gelatin, nrog phab ntsa tuab thiab tsis muaj huab cua permeability. Yog li, cov tshuaj ntsiav muag yog qhov npaj tau zoo los tiv thaiv tshuaj oxidation. Xws li cov tshuaj ntsiav vitamin e, nquag ua vitamin D3 tsiav tshuaj thiab luocaquan tsiav tshuaj.
(3) Cov tshuaj mos ua tau tuaj yeem ua rau hauv qhov quav. Cov txheej txheem suav daws ua kom yaj los yog ua cov tshuaj loj rau hauv cov roj soluble ncua kev kawm los npaj cov tshuaj ntsiav mos, thiab ua kom cov tshuaj ntsiav rau hauv cov tshuaj suppository. Piv nrog rau cov tshuaj tiv thaiv dav dav, cov tshuaj tiv thaiv qhov quav yog qhov yooj yim rau diffuse thiab nqus hauv lub qhov quav, thiab cov txheej txheem npaj tau yooj yim dua thiab siv tau yooj yim dua li cov tshuaj thau khoom.
(4) tshuaj muaj qhov tsw ntxhiab tsw phem thiab lw siv tshuaj yeeb. Nws yog qhov ua tau zoo-tias mos mos tsiav tshuaj tuaj yeem npog qhov tsis zoo ntawm cov tshuaj. Qhov ntau npaum li cas ntawm qee qhov tseem ceeb rau kev siv tshuaj yog qhov tsawg heev, xws li ajcalcitol thiab calcitriol (txhua tus muaj 0.25μg), uas zoo tshaj plaws tsim los ua rau hauv cov tshuaj ntsiav muag.
