Contact Us

Your satisfaction is our top priority, so we want to hear from you! You can speak with a Sigma Pharmaceuticals customer care team member by calling 800-779-3784 Monday through Friday from 8:00 a.m. to 5 p.m. CST. Or, you can send us your questions and comments any time by completing the following form, and we will be happy to provide you with a timely response. 

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