to relieve a gallbladder attack, you can take a lemon, squeeze out its juice and add 3 tablespoons of olive oil into it. Have it before going to bed and after waking up. You could also take one teaspoon of apple cider vinegar in a glass of apple juice to get relief from the pain. A liver and gallbladder flush is also recommended to flush out gallstones and sludge. Moreover, eat a high-fiber diet and drink lots of water.