Can Zantac cause green poo?

[Generallyok]

Been taking for a week and started getting green colour to bm. Is this something to be concerned about? Pharmacay said they didn't know??

Zantac shouldn't cause green poo, though a number of foods make green poo more likely. It suggests that something is not quite right with your digestion and food/bile is not being fully digested. Why are you taking zantac? If it persists or keeps recurring I would talk with your GP.