Will Correcting Vitamin D Deficiency Help a Sore Mouth? The People's Pharmacy Here's the part nobody explains when they're selling you the "Barbie drug.", Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin cells to Here's how to tell whether your dry lips signal a nutrient deficiency and how to find relief: https: bit.ly 4eOarBl Vitamin B12 deficiency symptoms: Cracked lips on the sides of the mouth is a warning sign Express.co.uk