Ānjīpútáotáng shì chángjiàn de guānjié bǎojiànpǐn.
Glucosamine is a common joint-health supplement.
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Decompose: 氨基 (ānjī, amino group, NH2) + 葡萄糖 (pútáotáng, glucose) = amino-glucose, i.e. glucosamine. Same logic as English: gluc-OS-amine = glucose with an amino substitution.
