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With the molecular formula C30H48O4, corosolic acid is a pentacyclic triterpene with the scientific name 2-alpha-hydroxyursolic acid. It fulfils the role of transporting glucose across cell membranes, and has thus been widely popularised in the scientific literature as ‘phyto-insulin’ or ‘botanical insulin’.
Isolated in several plants such as cranberry and Japanese loquat, corosolic acid is predominantly known for being the most active compound in banaba leaf. Studies also suggest that its ellagitannins may act in the same way as, or synergistically with, corosolic acid (4).
It’s on the strength of these various factors that the supplement Glucofit™ features a banaba extract standardised to 18% corosolic acid for enhanced effects.
Olive Leaf Extract a natural-source dietary supplement produced from olive leaves. It contains a very high level of oleuropein, a bioactive phytonutrient specific to the olive tree, which helps control blood lipids and prevent carbohydrate absorption.
It is aimed at anyone who wants to improve their cardiovascular health and maintain the integrity of their blood vessels. Individuals with the following risk factors are likely to be particularly interested in this product:
As well as supplementing with banaba, the following tips will also help you to reduce your blood glucose levels naturally:
The effect of Olive Leaf Extract capsules has been directly measured in three clinical trials (22).
1) One year’s supplementation with 250mg a day
Following 12 months’ daily supplementation by subjects with elevated cholesterol levels, researchers recorded:
2) Four weeks’ supplementation with 250mg a day
In overweight subjects, there was a significant improvement over four weeks in the expected ratio of coronary risk as compared with placebo. A clear decrease in triglycerides was observed.
3) Eight weeks’ supplementation with 250mg a day
The third study examined the ability of Olive Leaf Extract to reduce oxidative stress. Results showed that daily supplementation with 250mg reduced levels of MDA (malondialdehyde) by almost a third, a urinary marker of oxidative stress.
Studies suggest that the leaves and fruit are equally rich in oleuropein (23), but the olive leaf is considered a more renewable natural source for extraction (24). Hence its use in Olive Leaf Extract, and its ingredient Olécol®.