Lestari Octavia, Sumbadra, Moch Ilham Faris Baladraf. Development of a Sugar-Free Functional Drink to Enhance Concentration in Healthy Young Adults: A Literature-Based Formulation and Trial Proposal. AJPM [Internet]. 2026 May 30 [cited 2026 Jun. 6];4(5):709-18. Available from: https://ejournal.45mataram.ac.id/index.php/armada/article/view/2153