How long has Serenol been on the market? Julia November 15, 2019 15:11 Updated Follow Serenol was launched in the US in 2015. Related articles How long does Serenol take to work? Is Serenol approved by the FDA (Food and Drug Administration)? Is Serenol non-allergenic? How does Serenol work? How long has Revaree been on the market? Comments 0 comments Article is closed for comments.