I purchased this for my DD's colic... Works great i also find if you gice too much the only effect it has has is farting heaps or makes her poop a little runnier and smellier...

It works for the wind and also settles the tummy down. The taste my DD hates so i mis a small amount with some EBM and use the syringe and give it that way... I brought a dropper (glass @ $11) but found it easier just to use the syringe and suck a little bit up... Depends on how old but we just started out with a small amount and gave more if needed.
With the chucking up after a feed could be reflux. My DD has colic and reflux- the pain from the burning acid coming up wakes her up and makes her scream and arch her back... Might help to get checked for reflux...a small dose of zantac for my DD helps out heaps...
Good luck.