Lichtenberger, Frank, Krishna Rajendran, Keri Layton, Sucharitha Lakshminarayan, Latha Krishnamurthy, and Dheeraj K. Deep. “Assessment of KaraShieldTM Properties in Supporting the Immune Health of Healthy Subjects: A Randomized, Parallel, Double-Blind, Placebo-Controlled Clinical Study”. International Journal of Basic & Clinical Pharmacology 13, no. 1 (November 8, 2023): 1–12. Accessed October 23, 2025. https://www.ijbcp.com/index.php/ijbcp/article/view/5470.