[1] Izabela Przybyłek, Tomasz M. Karpiński. Antibacterial Properties of Propolis. Molecules. 2019 Jun; 24(11): 2047. PMID: 31146392. DOI: 10.3390/molecules24112047.
[2] Seif Salaheldin Mohamed. Propolis anti-viral activity towards CODIV-19: is it effective? Researchgate, March 2020. DOI:10.13140/RG.2.2.22635.36649.
[3] Andrea Braakhuis. Evidence on the Health Benefits of Supplemental Propolis. Nutrients. 2019 Nov; 11(11): 2705. PMID: 31717277. DOI: 10.3390/nu11112705
[4] Joelle O’Neil, Susan Hughes et al. Effects of echinacea on the frequency of upper respiratory tract symptoms: a randomized, double-blind, placebo-controlled trial.
[5] Andreas Schapowal, Peter Klein et al. Echinacea Reduces the Risk of Recurrent Respiratory Tract Infections and Complications: A Meta-Analysis of Randomized Controlled Trials. Adv Ther 32, 187–200 (2015). DOI: 10.1007/s12325-015-0194-4.
[6] James B Hudson. Applications of the phytomedicine Echinacea purpurea (Purple Coneflower) in infectious diseases. J Biomed Biotechnol. 2012;2012:769896. DOI: 10.1155/2012/769896. Epub 2011 Oct 26. PMID: 22131823. DOI: 10.1155/2012/769896.
[7] Mehdi Sharifi-Rad, Dima Mnayer et al. Echinacea plants as antioxidant and antibacterial agents: From traditional medicine to biotechnological applications. Phytother Res. 2018 Sep;32(9):1653-1663. DOI: 10.1002/ptr.6101. Epub 2018 May 10. PMID: 29749084. DOI: 10.1002/ptr.6101.
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