What is the recommended ginkgo biloba dosage
Ginkgo is not always ginkgo
What is ginkgo?
Ginkgo (Ginkgo biloba) is a tree species that originated in China and is now planted around the world. In East Asia, the tree is cultivated for its edible seed and as a temple tree. Ginkgo biloba is one of the most intensively studied medicinal plants. For about 50 years there have been drugs that are used against dementia, dizziness, memory disorders and noises in the ears (tinnitus).
What ingredients does ginkgo contain?
The most important active ingredients in the leaf extracts are secondary plant substances such as flavonoids (for example quercetin), terpenoids, sitosterols and anthocyanins.
For the production of a medicinal extract from gingko leaves there are precise regulations in the European Pharmacopoeia. The percentage of the active ingredients, e.g. flavone glycosides, is specified. There is an upper limit for the undesirable ginkgol acid. For foods and dietary supplements containing ginkgo, on the other hand, there is no standardized composition. The individual products are therefore not comparable with one another.
Investigations by the Central Laboratory of German Pharmacists (ZL) also show that the majority of the food supplements examined contain ginkgo extracts for which there is a justified suspicion of the addition of secondary plant substances from other plant sources, e.g. quercetin and rutin from buckwheat or extracts of the Japanese pagoda tree.
Phytofakten - The Lexicon of Medicinal Plants. Ginkgo. DAZ online, as of: December 18, 2019 (accessed on July 13, 2020)
Tawab et al .: Food supplements with ginkgo under the microscope, Pharmazeutische Zeitung online edition 20/2010
Leistner E; Drewke C (2010): Medicines and food from Ginkgo biloba. Potentially toxic ingredients and their mechanisms of action. DAZ (17): 84, as of April 29, 2010
Herbal Preparations: Cardiologists should be aware of these interactions. Ärzteblatt online from 01.03.2017
Liperoti R et al. (2017): Herbal Medications in Cardiovascular Medicine. Journal of the American College of Cardiology 69 (9)
BfR: The safety of teas containing ginkgo leaves cannot be assessed due to a lack of data, BfR health assessment No. 021/2010 of 9 December 2009
ALS: Food supplements with other substances in the regulatory area of NemV, HCV and LMIV, Opinion No. 2015/31
NIH: Ginkgo Factsheet
Lower Saxony State Office for Consumer Protection and Food Safety (LAVES): Dietary supplements with plants and plant extracts. Health without risk? (accessed on July 13, 2020)
Bavarian State Office for Health and Food Safety: Differentiation between pharmaceuticals and food supplements. Example: preparations with ginkgo extracts. Status: 02/21/2017 (accessed on 07/13/2020)
Ökotest: Remedies for memory disorders in the test - Fancies Ökotest (8), 2018
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