Ah mama, yan talaga ang concern ko dati with my youngest kasi may G6PD din siya! Honestly, mas safe na i-check mo directly with your pedia or sa Similac hotline kung okay ang Gain Plus para sa G6PD babies kasi may certain ingredients na trigger ang condition, at different ang reaction ng bawat baby. One of my mum friends switched formulas din but had to go back kasi ang laki ng adjustment, so better na sigurado ka muna before you commit to the switch!