Coffee is usually OK to drink if you have gallstones. However, you should be sure to stick to no more than 400 milligrams of caffeine per day, which is about 3 to 5 cups a day. If you are having issues with your gallbladder, you may want to avoid adding excess cream to your coffee, as this may lead to discomfort. If you have any questions regarding dietary changes following a gallstone diagnosis, contact South Denver GI today.