Arctostaphylos uva-ursi is one of the species of Bearberry, in the genus Arctostaphylos, belonging to the family Ericaceae, native to the
northern North America, Asia and Europe. The herb has been used in
traditional medicine as diuretic agent and to treat urinary problems,
including bladder infections, kidney infection, kidney stone, pelvic
pain, etc.
The immune system is the
set of cells and their activity against antigens or infectious agents
that comprises of the body's defense system against diseases. The
immune system does a great job of keeping people healthy and preventing
infections. Beside foods and nutritional supplements, herbs also play a
important role in helping the immune system defend against viruses and
bacteria attacks.
The Ingredients
It contains arbutin, ursolic acid, tannic acid, gallic acid, some
essential oil and resin, hydroquinones tannins, phenolic glycosides and
flavonoids.
The benefits
Arbutine from Arctostaphylos uva ursi has been found to be effective as
non-antibiotic drugs in treating diseases induced by bacteria, caused by
S. aureus, E. coli, P. aeruginosa and C. albicans. Also in the study of
Extracts of Canadian first nations medicinal plants, including
Arctostaphylos uva ursi (kinnikinnick or bearberry),
inhibited the growth of all Neisseria gonorrhoeae (Ng) isolates with
minimum inhibitory concentrations of 32 μg/mL, 4 to 32 μg/mL, 16 to
>32 μg/mL, and 32 to 64 μg/mL, respectively. Other study on novel
acylated caprylic alcohol glycosides (1, 2) produced by Arctostaphylos
pumila, showed the exhibited antibacterial activity against
Gram-positive methicillin-resistant Staphylococcus aureus with an MIC of
128 microg/mL and 64 microg/mL, respectively.
The Side effect
1. Overdoses may cause gastrointestinal discomfort, including cause
nausea, vomiting, etc. and fever, chills, severe back pain, ringing in
the ears, etc.
2. The herb may interact with other medicine, including diuretic
3. Do not use the herb in new born, children or if you are pregnant or
breast feeding without approval from the related field specialist.
4. Etc.
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References
(1) Examination of antimicrobial activity of selected non-antibiotic drugs by Kruszewska H, Zareba T, Tyski S.(PubMed)
(2) Extracts of Canadian first nations medicinal plants, used as natural
products, inhibit neisseria gonorrhoeae isolates with different
antibiotic resistance profiles. by Cybulska P, Thakur SD, Foster BC,
Scott IM, Leduc RI, Arnason JT, Dillon JA.(PubMed)
(3) Miniaturization of the structure elucidation of novel natural
products--two trace antibacterial acylated caprylic alcohol glycosides
from Arctostaphylos pumila by Hu JF, Yoo HD, Williams CT, Garo E, Cremin
PA, Zeng L, Vervoort HC, Lee CM, Hart SM, Goering MG, O'Neil-Johnson M,
Eldridge GR.(PubMed)
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