Its really bad for your heart health and the baby... I used to drink red Bull - blueberry mmmm my fav but I stopped the sec I was pregnant.
I don't drink them, I haven't for years, they make me sick. My sister in law wanted to know if they effect the baby in any way. She just started online college and stays up late after her 2 other kids go to bed to do her work.
Yes you aren't supposed to consume that much sugar or caffeine while pregnant & like the others said there are chemicals in them that can affect the baby.
Definitely don't recommend drinking them, it says on the back do not use if pregnant or lactating think that's a sure enough sign they aren't safe(:
I don't think they are very healthy for your baby. They have more then the daily recommended amount of caffeine and a ton of chemicals