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About product and suppliers:
        Alibaba.com offers 2,582 b12 pharmaceutical grade products. About 76% of these are vitamins, amino acids and coenzymes, 6% are antibiotic and antimicrobial agents, and 6% are anti-allergic agents. 

A wide variety of b12 pharmaceutical grade options are available to you, such as feed grade, food grade, and cosmetic grade. You can also choose from free samples, paid samples. 

There are 2,590 b12 pharmaceutical grade suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Vietnam, and Malaysia, which supply 99%, 1%, and 1% of b12 pharmaceutical grade respectively. 

B12 pharmaceutical grade products are most popular in South America, Eastern Europe, and North America. 

You can ensure product safety by selecting from certified suppliers, including 459 with ISO9001, 307 with Other, and 33 with HACCP certification.