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About product and suppliers:
        Alibaba.com offers 1,923 b complex vitamin products. About 36% of these are veterinary medicine, 34% are vitamins, and 19% are immune & anti-fatigue. 

A wide variety of b complex vitamin options are available to you, such as free samples, paid samples. 

There are 1,890 b complex vitamin suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and United States, which supply 85%, 4%, and 2% of b complex vitamin respectively. 

B complex vitamin products are most popular in Africa, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 640 with GMP, 280 with Other, and 242 with ISO9001 certification.