SOPYAN, IYAN, Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, Indonesia. Jl. Raya Bandung Sumedang KM.21, Jatinangor, 45363, Study Center of Dosage Form Development, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, Indonesia Jl. Raya Bandung-Sumedang KM.21, Jatinangor, 45363, Indonesia