A viral TikTok trend claiming that Coca-Cola can relieve migraines now has some scientific backing. A recent National Geographic report explains that the caffeine in Coke acts as a vasoconstrictor, helping to narrow dilated blood vessels often responsible for migraine pain. The sugar can help stabilize blood glucose levels, which sometimes drop during migraines, and the carbonation may ease nausea—another common symptom. While some people report noticeable relief, experts caution that this remedy doesn’t work for everyone and shouldn’t replace proper treatment. It may offer short-term help, but it’s not a cure.