The weather changed and suddenly I was dealing with sneezing and cold sores. I immediately got out my bottle of Manuka (Leptospermum scoparium) to address my cold sores. Then I cut an onion in half and took the bowl with the two halves with me when I moved from one room to another. I am happy to report that by the next day I had stopped sneezing and the cold sores were almost gone.
For those of you who haven’t read any of my older posts on using an onion, here is an excerpt from a post from 2010:
And then there is the old-fashioned remedy of the Onion. Apparently, according to an email circulating last year, having an unpeeled onion in a dish in each room of the house protects against bacteria, viruses, and flu. The email went on to say that if someone was already ill to place a cut onion next to them overnight. In the morning the onion will have turned color and the person will be better.
Ever since, whenever I start sneezing or feel as if a cold is coming o,n I cut an onion and keep it close. Whether it is mind over matter or not, I have been able to avoid getting a full-blown cold or flu for years. And it is still, to my mind, a form of aromatherapy! Certainly, it is very aromatic!
While the older blogs are no longer available on the website, there are loads of articles in the Article Archives and here are a couple of links to follow. These pages have both useful information and blend ideas to try as well. Simply click on the name to go to the article.
Although there are a number of essential oils that can be really helpful when dealing with cold sores, Manuka is always the one I reach for first. I just did a quick review to see if I could come up with any more studies but the one I shared on a blog back in 2009 is still the only one I can find that is specific to the essential oil and not the honey.
Virucidal activity of a ?-triketone-rich essential oil of Leptospermum scoparium (Manuka Oil) against HSV-1 and HSV-2 in cell culture
Author(s) REICHLING Jürgen (1) ; KOCH Christine (1) ; STAHL-BISKUP Elisabeth (2) ; SOJKA Cornelia (2) ; SCHNITZLER Paul (3) ;
(1) Institute of Pharmacy and Molecular Biotechnology, Department of Biology, University of Heidelberg, Heidelberg, ALLEMAGNE
(2) Institute of Pharmacy, Department of Pharmaceutical Biology and Microbiology, University of Hamburg, Hamburg, ALLEMAGNE
(3) Hygiene Institute, Department of Virology, University of Heidelberg, Heidelberg, ALLEMAGNE
The inhibitory activity of manuka oil against Herpes simplex virus type 1 (HSV-1) and Herpes simplex virus type 2 (HSV-2) was tested in vitro on RC-37 cells (monkey kidney cells) using a plaque reduction assay. In order to determine the mode of antiviral action of the essential oil, manuka oil was added at different times to the cells or viruses during the infection cycle. Both HSV types were significantly inhibited when the viruses were pretreated with manuka oil 1 h prior to cell infection. At non-cytotoxic concentrations of the essential oil, plaque formation was significantly reduced by 99.5% and 98.9% for HSV-1 and HSV-2, respectively. The 50% inhibitory concentration (IC50) of manuka oil for virus plaque formation was determined at 0.0001% v/v ( = 0.96 ?g/ mL) and 0.00006% v/v ( = 0.58 ?g/mL) for HSV-1 and HSV-2, respectively. On the other hand, pretreatment of host cells with the essential oil before viral infection did not affect plaque formation. After virus penetration into the host cells only replication of HSV-1 particle was significantly inhibited to about 41% by manuka oil. Flavesone and leptospermone, two characteristic ?-triketones of manuka oil, inhibited the virulence of HSV-1 in the same manner as the essential oil itself. When added at non-cytotoxic concentrations to the virus 1 h prior to cell infection, plaque formation was reduced by 99.1 % and 79.7 % for flavesone and leptospermone, respectively.
Journal Title: Planta medica ISSN 0032-0943 CODEN PLMEAA
Source: 2005, vol. 71, no12, pp. 1123-1127 [5 page(s) (article)] (17 ref.)