鑒于美國國家毒理學計劃的研究結果表明，銀杏葉提取物具有潛在的致癌性，專家小組得出結論認為，該添加劑對貓和狗不安全。在沒有證據(jù)表明提取物在動物飼料中起著調味作用或對適口性有影響的情況下，專家小組無法就添加劑的功效得出結論。部分原文報道如下：

 

　　Following a request from the European Commission, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of a dried extract prepared from the leaves of Ginkgo biloba L. (G. biloba dry extract) when used as a sensory additive in feed for cats and dogs. G. biloba dry extract is specified to contain at least 24% flavonol glycosides, at least 6% terpene lactones and less than 5 ppm ginkgolic acids. Since uncertainty remains concerning the nature of up to 75% of the extract, the additive is not sufficiently characterised to allow an assessment based on the individual components. In view of the indication of potential carcinogenicity from the results of studies by the National Toxicology Program of the USA, obtained with a G. biloba extract comparable with the additive under assessment, the FEEDAP Panel concludes that the additive cannot be considered safe for cats and dogs. In the absence of data, no conclusions can be drawn on the safety for the user. In the absence of evidence that the extract acts as a flavour in animal feed or has an effect on palatability, the FEEDAP Panel was unable to conclude on the efficacy of the additive.

 

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