I take Grape Bitters before a meal (during or after is ok if one forgets to take them) they don't have the laxative effect that Swedish Bitters have.
Grape Bitters are bitter herbs that will clean the liver if taken 2 x a day for 7 days in a row. Put them in a dropper bottle and squirt them in the back of the throat to hit the vagus nerve... works better than taking a teaspoonful like the directions on the botttle says according to Hvergerthi (The Truth in Medicine Forum) who is a herbal formulating chemist. Plantary Herbals makes Grape Bitters that can be purchased at http://www.iherb.com
at discount pricing.
I like this method of cleaning the liver and for digestion as it makes the body do the work creating natural bile.