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Odaguchi H, Hyuga S, Sekine M, Michimae H, Hyuga M, Uchiyama N, Uema M, Kumagai Y, Suzuki Y, Nabeshima S, et al. Safety and Efficacy of Ephedrine Alkaloids-Free Ephedra Herb Extract (EFE) for Mild COVID-19: A Double-Blind, Placebo-Controlled, Randomized Comparative Trial. Microorganisms. 2025; 13(3):641. https://doi.org/10.3390/microorganisms13030641

Odaguchi, Hiroshi, Sumiko Hyuga, Mariko Sekine, Hirofumi Michimae, Masashi Hyuga, Nahoko Uchiyama, Masashi Uema, Yuji Kumagai, Yusuke Suzuki, Shigeki Nabeshima, and et al. 2025. "Safety and Efficacy of Ephedrine Alkaloids-Free Ephedra Herb Extract (EFE) for Mild COVID-19: A Double-Blind, Placebo-Controlled, Randomized Comparative Trial" Microorganisms 13, no. 3: 641. https://doi.org/10.3390/microorganisms13030641

Odaguchi, H., Hyuga, S., Sekine, M., Michimae, H., Hyuga, M., Uchiyama, N., Uema, M., Kumagai, Y., Suzuki, Y., Nabeshima, S., Omagari, N., Doi, Y., Yamaoka, K., Miyazaki, K., Fuji, S., Umezawa, Y., Kodera, S., Nagashima, H., Hirose, W., & Goda, Y. (2025). Safety and Efficacy of Ephedrine Alkaloids-Free Ephedra Herb Extract (EFE) for Mild COVID-19: A Double-Blind, Placebo-Controlled, Randomized Comparative Trial. Microorganisms, 13(3), 641. https://doi.org/10.3390/microorganisms13030641