Here is a link to Melissa Kaplan's Vomiting/Regurgitation in Reptiles page. There is some good info and links on this page you just have to read thought it to fine what pertains to you.
Vomiting/Regurgitation in Reptiles I know most if not all reptile owners and myself don't like Melissa Kaplan's views on ownership of reptile but she does have some good info we all can learn from.
Here is some info from my care sheet on my website. There is more info about feeding BCC, BCI and BCA at this link.
MyCarePage
If your boa regurgitates, DO NOT FEED IT AGAIN FOR AT LEAST 2 WEEKS. I can’t stress this enough. You must give its stomachs time to settle down and repair itself. Think about it, when you throw up, do you really want to eat right away? Neither do they. Instinctually, they may eat, but that’s all it is, an instinct. And feeding them will do much more harm than good. Usually, they throw up the new meal as well and begin to dehydrate. If they regurgitate often enough, it begins to develop into a syndrome and it can be fatal. After the initial two week waiting period to feed the next meal, feed a smaller than normal prey item. For example, if you feed large rats, feed a medium or even better, a small rat instead. Then wait another two weeks and feed another small rat. Another two weeks and another small rat and if all goes well, you can step up to a medium rat two weeks later and then another medium rat 12 days later and then a large rat 12 days later and then you can resume a normal feeding schedule while keeping a careful eye on your boa. These feeding schedules have been constructed with the optimal health and longevity of your boa in mind. Slight deviation from this may be acceptable depending on the individual snake.
Take care
Tom
