A slow poison which directly attacks yours liver and spoils it. Their are many experiments online which proves that it is bad for health. when you heat the pepsi for a long time it becomes tar . yaa tar which is used in making roads. now think what happens when it reaches your stomach.
Also it is a carbonated drink which costs just 1 rs 50 p manufacturing price. That black water is sold to you at the rate of Rs 10 . Are you crazy how much profit you want to make?
I prefer soda over this carbonated drink. This is better then the black water. it also improves the gut instead of spoiling it.