MARCI kids website

My DD is on Zegerid 40 mL packets and we’re managing her reflux well when on MARCI dose. In the last week, though, she’s shown some signs that we may not be treating the reflux effectively any more. I’d like to check the dosing amounts, but the website has been down for a while. Does anyone know how to calculate (without the mylanta added in)? My girl weighs 24 lbs. now. She’s always needed to be on the high end of the recommendation.

I’m going to increase her dose because I’d rather up it and go back down than not change it and have to deal with the repercussions. But, I’d like to know if possible.

Thanks!