Alka Tone Keto A piece of dark chocolate in its time is healthy. In some people, however, this can cause heartburn. This is due to cocoa .Cocoa relaxes the sphincter between the stomach and esophagus. Everything in which cocoa is processed can cause complaints ( source , source ).Also think of chocolate milk, desserts in which chocolate is incorporated or cocoa powder on the cappuccino.Tip 10: do not eat raw oniononion cuttingResearch shows that people are more likely to suffer from burping and heartburn after eating dishes that contain raw onions ( source ).The burrs are caused by the gas produced by the high amount of digestible fibers in onions ( source , source ).By frying onions, they are more digestible, so that they will give complaints less quickly.Not everyone suffers from heartburn due to eating raw onions. Alka Tone Keto Side Effects