For over 35 years, Quantum Health has led the natural products industry in developing supplements and personal care products that truly work. From the start, their focus was to source only the highest quality, research-supported ingredients to ensure product effectiveness. It all started in 1981 with a cold sore ointment created from research on the amino acid L-Lysine and other targeted nutrients. Now sold as Super Lysine+ in natural product stores and Lip Clear Lysine+ in drug and supermarket chains, Quantum's cold sore treatment promotes efficient resolution of this common annoyance. Both nutrient-based and effective, this has been Quantum's top-seller since our first years in business. In fact, their lysine product remains the leading herbal/nutrient-based cold sore ointment in the US and Canada!