Elmex Toothpaste - Sensitive Professional Elmex 75 ml, Toothpaste Sensitive Professional is a medical toothpaste with clinically proven formula, which, when applied twice a day, provides immediate pain relief and long-lasting pain relief with regular use. The toothpaste contains the PRO-ARGIN® technology, this is a special combination of calcium carbonate and arginine, a natural amino acid that is also present in saliva and closes open dentin channels and thus protects the nerves against pain signals.