Hi, my breastfed 5 week old has been on zantac for reflux for two weeks now. In the last week I have noticed that his poos really smell (simular to rotten eggs) has anyone else had this problem with zantac, if not it may be something else. I have also posted in another thread about his screaming before and whilst doing a poo (the pead. says this is normal). don't know if they are related or not. Please help if you can. Thank you.