This one was a useful review with most current treatment strategies [0], that publication also helped me to focus on ALT and AST levels to see the type (biliary or liver related, this has treatment implications.). The drug I mentioned is Metamizole, investigated here [1], in this article they also show Morphine to specifically increase Spincter of Oddi spasms! A post on a Dutch website [2] helped convince me that Metamizole may be an option, indeed it is back in pharmacies around the Netherlands since 2 years (after a ban since 1972). Yet another article convinced me surgery may not be the best option and we should try a pharmacological approach first. [3] You see, it quickly becomes an expensive thing to do. The bad thing is, these paywalls confine people without access to the literature to blogs and discussion forums. I read a lot of strange things there. Of course being a scientist I may be better at judging the value of online material but, even my wife who is a marketing specialist got great value out of publication [0], it also contains some very nice visuals.
[0] http://www.ncbi.nlm.nih.gov/pubmed/26431602 ($31.50)
[1] http://www.ncbi.nlm.nih.gov/pubmed/8794800 ($39.95)
[2] http://www.medischcontact.nl/archief-6/tijdschriftartikel/11... (Free from a medical website, in Dutch)
[3] http://www.ncbi.nlm.nih.gov/pubmed/22529689 (Free online article!)