Can My Child Use Tru Niagen®? September 30, 2019 18:53 Updated Tru Niagen® is not intended for use by children. We recommend pregnant or nursing women to consult a physician. Related articles Will Tru Niagen® Affect My Athletic Performance? Why Did The Serving Size Change From 2 Capsules To 1? (150mg --> 300mg) Is There A Recommended Amount To Not Exceed Per Day? Can I Take Tru Niagen® With Multivitamins? If I Purchase From Amazon, Am I Getting Old Or Expired Product?