It’s not just Coca-Cola that can cause facial numbness. A significant number of people report experiencing this side effect when consuming dairy products such as milk and cheese, especially if gluten is present in the diet.
So yes, it does happen naturally to some people sometimes for a time period after using some foods and we don’t know exactly why we get this transient feeling of facial numbness. But there are many documented instances of pharmaceutical drugs causing similar symptoms on some occasions and we do know what triggers these reactions so you might want to scope out if any medications or other substances may be responsible before trying exclusively natural remedies. Hopefully one person’s experience with this problem may help others who might also periodically experience the same condition without understanding how.