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Thank you for your interest in Master Supplements. We are a manufacturer of high quality probiotics, prebiotics, and digestive enzymes based in Victoria, MN. 

Feel free to ask us a question using the form to the right. If you have a pressing issue or concern, please call us at (800) 926-2961. We are open from 9 am to 5 pm CST Monday through Friday.

You can also visit our FAQ page or the individual FAQ sections for each product to see if we have already published the information you are looking for.

Example: (123) 456-7890 or 123–456–7890