New Optima NMN-C® supplements to boost NAD+ levels, Elevant founder breaks down the facts around NMN purity Lifespan innovation website Longevity Technology reported in August 2021 on the impending launch of Elevant’s new Optima NMN-C tablets. In response to market feedback which highlighted that purity of NAD+ boosters is a significant concern for consumers, they also sought the perspective of Elevant founder Guillaume Bermond on the topic of pure NMN.