Cov pes tsawg leeg hauv lub plhaub mos ua lub plhaub yog zoo li qhov ua tau zoo ntawm lub plhaub capsule. Cov khoom sib xyaw ua ke ntawm cov plhaub taum feem ntau suav nrog plaub yam tshuaj: roj hmab, hnab yas, dej thiab dej ntxiv. Ntxiv rau qhov ua tau raws li cov cai ntawm pharmacopoeia, qhov zoo ntawm gelatin yuav tsum tseem ua tau raws li cov tseev kom muaj zog gel (khov quab yuam) thiab viscosity, xws li khov quab yuam ntawm 150 ~ 2500Bloom thiab viscosity ntawm 25 ~ 45mpa. s (centipoise). rau cov tshuaj uas muaj zog hygroscopicity, gelatin nrog lub siab khov quab yuam thiab muaj zog tsawg yuav tsum tau siv. Titanium dioxide rau masking tus neeg sawv cev yog siv ntau npaum li 2-12g ib kg ntawm gelatin. Cov tshuaj tsw qab xws li 5% sucrose tuaj yeem raug ntxiv los ntxiv cov qab zib thiab qab qab, thiab kho qhov tawv. Cov tshuaj txhaws yog qhov sib xyaw nrog cov tshuaj methyl p-hydroxybenzoate (1.6%) thiab propyl p-hydroxybenzoate (0.04%), lub plhaub tshuaj ntsuab muaj qee qhov dej, thiab cov khoom tiav tiav 6% ~ 13%.
