fsboeira
You are right they all soften and crunch gall stones.
In my own experience GCG was very effective, but malic acid did not work very well. Never tried the vinager.
I don´t see why you can´t combine all of them.
Remember GCG works better in empty stomach, 30 minutes before a meal.
After 18 flushes and feeling great after a bad gb attack i must say all thiese herbs+medicine work, but what really does the trick is the FLUSH.
Good luck
Fernando