Can my babies drink this?

This was un-intentional in the first place as i thought i got rid of all of the robinsons juice cordial, by boiling water and putting it in the bottle.
Now i am using the bottle, and have noticed that it smells of the tropical flavour previously in it, and it tastes like it aswell ( very slightly). Can this do any damage to the plant, or could it do it some good?
thanks for help

wash your bottles thoughrly you never know what reaction the plants might have to something unknown.