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About product and suppliers:
        Alibaba.com offers 1,581 l theanine products. About 24% of these are tea extract, 19% are herbal extract, and 3% are other food & beverage. 

A wide variety of l theanine options are available to you, such as leaf, seed, and shell. You can also choose from green tea extract, black tea extract, and aloe vera extract. As well as from free samples. 

There are 1,571 l theanine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Japan, and United States, which supply 94%, 3%, and 1% of l theanine respectively. 

L theanine products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 480 with ISO9001, 287 with Other, and 147 with ISO22000 certification.
        
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