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About product and suppliers:
        Alibaba.com offers 311 pharmaceutical castor oil products. About 31% of these are castor oil, 19% are essential oil, and 1% are hair treatment. 

A wide variety of pharmaceutical castor oil options are available to you, such as bulk, gift packing, and can (tinned). You can also choose from gmp, fda, and msds. As well as from hand made, refined, and modified. And whether pharmaceutical castor oil is organic, or common. 

There are 308 pharmaceutical castor oil suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and United States, which supply 75%, 20%, and 1% of pharmaceutical castor oil respectively. 

Pharmaceutical castor oil products are most popular in North America, South Asia, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 114 with Other, 55 with ISO9001, and 21 with GMP certification.