Hindi ko sure kung anong specific brand of appebon ang tinutukoy mo, but generally it's okay na may ibang adults sa bahay na gumagamit ng vitamins habang nagb-breastfeed ang mama, ang breast milk ay hindi affected ng vitamins na ginagamit ng ibang tao sa household. If you're worried about anything transferred through breast milk mismo, better to check with your OB or pediatrician about the specific supplement kasi may mga ingredients na pwedeng dumaan sa milk, but most standard vitamins for adults ay safe lang!