补剂

补剂	bǔ jì	tonic; supplement
补	bǔ	to repair / to patch / to mend / to make up for / to fill (a vacancy) / to supplement
剂	jì	(bound form) a compound made by mixing ingredients (esp. a medicinal or chemical product) / (bound form) small piece of dough cut from a rolled log, used for making mantou (steamed buns) or dumplings / classifier for a dose of medicine