If none of the regular advice is helping ease your chapped lips, it could be a nutritional deficiency. Take iron for one. Iron deficiency anemia, which occurs when you aren't getting enough iron in your diet, can lead to a whole host of bad news. Cracked lips are just one of the symptoms, along with fatigue, weakness, dizziness, irritability, headache, irregular heartbeat and difficulty concentrating, among others.
Some people may have a medical issue (such as one related to iron absorption) that they need to discuss with their doctor, but many just need to increase the iron in their diet or take an iron supplement. The supplements are best taken with some vitamin C pills, or a little OJ. When it comes to diet, a whole array of foods can help you up your iron intake. Lean red meats, dried beans and dried fruits are a few of the biggies, along with eggs (especially the yolks) and some seafood. Seeds, nuts, spinach, peas, broccoli, asparagus and whole grains are among the other foods you can try out.