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About product and suppliers:
        Alibaba.com offers 964 vitamin c-500mg products. About 100% of these are vitamins, 68% are immune & anti-fatigue, and 18% are beauty products. 

A wide variety of vitamin c-500mg options are available to you, such as tablets, capsules, and softgel capsule. You can also choose from free samples, paid samples. 

There are 1,008 vitamin c-500mg suppliers, mainly located in Asia. The top supplying countries are China (Mainland), United States, and Canada, which supply 95%, 2%, and 1% of vitamin c-500mg respectively. 

Vitamin c-500mg products are most popular in Western Europe, Domestic Market, and North America. 

You can ensure product safety by selecting from certified suppliers, including 363 with ISO22000, 304 with ISO9001, and 266 with ISO14001 certification.