Does Doctor brown bottle really effective for removing gas as it claim? I got a fussy baby which I am having a hard time to feed each time due to too many gas

Not sure if this is helpful, but I have a friend who is also considering Dr Brown bottles. The feedback she had gotten is that it seemed to help with reducing colic.. But there are many parts to wash. So currently, she still trying to decide between that, Tommee Tippee and Avent.