Poop smells while taking ferlin drops

Oo normal yan, mama! The iron in ferlin drops talaga nagbibigay ng that metallic/dark smell sa poop, noticed ko rin yan sa anak ko dati when she was on iron supplements. As long as baby's not constipated or may blood sa stool, it's just the iron doing its thing, pero best to mention it sa doc during next check-up para peace of mind mo lang.