Alam ko yan, nakaka-alala ang ubo lalo na first time! Small amounts of calamansi juice in warm water is okay, pero honestly best talaga na i-check with your pedia first kase bawat baby different, and they can tell you the exact amount na safe para sa 1-year-old mo, some kids may find it irritating pa. A few of us tried natural remedies din, pero mas nakacomfort kami knowing doc approved it muna, lalo na pag first time mom ka pa lang.