thanks for choosing health care magic.Dear this
antibiotics has nothing do with stool color.This could be due to some food that you have eaten or something else.Please take advice of your doctor if this persists.Black stool may due to some food substance or some minor
bleeding inside your GI tract which needs attention.Your doctor may ask you to go for
stool test and check for presence of
blood in it.take care .Avoid eating spicy and heavy meals.