NATURAL PRODUCTS Vs. SYNTHETIC DRUGS
In a first-ever
comprehensive study of 124 natural product combinations, a team of researchers
from the National University of Singapore (NUS) and Tsinghua University, led by
Professor Chen Yu Zong from the Department of Pharmacy at the NUS Faculty of
Science, found that certain combinations of natural products can be as
effective as human-made drugs in acting against specific disease processes.
However, the chances of finding the effective combination of natural products
could be as low as below 3 per cent.
The active ingredients
in combinations of natural products can achieve the same level of potency as
synthetic anticancer and antibacterial drugs but they have to be taken in
larger quantities or for a longer period of time. These combinations include
traditional Chinese medicine such as the Realgar-Indigo naturalis formula
designed for the treatment of leukemia, Wedelia chinensis for anti-inflammatory
purposes and black tea used in Japan for the treatment of gastroenteritis.
Published
in PLOS ONE in November 2012.
Through an analysis of
more than 1,601 previous studies conducted on natural products and 190
human-made drugs, the researchers found that natural products are generally 10
to 100 times weaker than human-made drugs. They concluded that combinations of
natural products can achieve the same strength as human-made drugs, but with
current traditional practices, the odds are low.
Prof Chen said,
"There have been claims that natural products simply have a placebo
effect. In our study, we looked at more than 100 types of natural product
combinations that are perceived to be the best and found that it is possible
for natural products to achieve the same effectiveness as human-made drugs.
However, the probability of finding such combinations based on traditional
methods is low (below 3 per cent) as the natural products have to be of
sufficient potency and taken in the right combination."
Next
steps for research on natural products ::
The findings from this
research provide a foundation for further studies on the clinical effectiveness
of herbal medicine and how a combination of natural products and synthetic
drugs can be taken together to fight diseases.
The team will continue
to conduct more research in this area, in particular, to determine how to
achieve the same level of effectiveness for natural products as synthetic
drugs. Their research will focus on popular herbal products and frequently
prescribed traditional medicine.
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