N'ihe gbasara ?gw?, vitamin B13 (orotic acid) na ihe nd? na-emep?ta ya na-eji d? nn?? ukwuu, nke n'onwe ya b? ?gw? imeju d? mma maka jaundice, ?r?a imeju, imeju ab?ba, nnukwu ?ba ?cha n'anya na-ad?gh? ala ala nwere mmet?ta d? mma. N'?l? na ná mba ?z? ka e mep?tara orotic acid dabeere serialization ?gw?, d? ka nitro acid whey, whey amino as?d, na ah?a ?gw? nd? kas? ekwe nkwa b? orotic acid na a 5 - amino-imidazole-4 - A na 90 Celsius C amide nnu, whey nnu nke amonia -ethyl amide ( Orazamide), nwere ike na-emeso ya na a d?gas? iche iche nke protein njik? nke imeju na ?r?a nke pharological. ?r?, nke agh?wo ?gw?gw? nke ?r?a imeju na mba ?z? ?gw? b? isi na mgbakwunye na purine ma jiri ya kwalite mmepe ?m?aka nwere mmet?ta nkwalite d? mma; ihe mgbakwunye orotic acid ?z? na obi na ?f?d? nwekwara mmet?ta d? ukwuu. Whey acid ?gw? maka ?d? mma ya, mmet?ta nd? na-ad?gh? mma, ? d?gh? mkpali nke ak?r?, na vivo na obere ihe f?d?r? na nch?k?ta mmas? na nlebara anya. Mep?tara na-ad?begh? anya mep?tara orotic acid maka njik? nke nucleic acid, nucleic acid b? isi ihe nke nd?, n'ihi na ?m?m? nke protein biosynthesis na ?m? mmad? mkp?r? nd? ihe nketa nwere nn?? mkpa d? mkpa, ugbu a mep?tara ak?r?ngwa maka mmep?ta nke nucleic acid nri ah?ike na ?gw?, nwere ike imet?ta na ?ch?kwa metabolic ?r? nke ?t?t? nd?, na-egbu oge mmad? ?ka nká nwere mmet?ta d? ?r?ba ama.