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San Antonio, TX
A 43-year-old male asked:

Having colonoscopy next week. is it critical that low dose aspirin, fish oil, multivitamin, and vitamin c be discontinued 7 days in advance?

1 doctor answer3 doctors weighed in
Dr. James Goodpaster
Dentistry 30 years experience
Yes If Told Not: The Aspirin and fish oil both can thin your blood and cause bleeding issues during the procedures. Vitamins often have dyes in them that can discolor the tissues and make it difficult to accurately assess any conditions that might be present. Do you really want to go through the prep for the test to get false or inaccurate results? Follow the doctor's orders!
Dr. Richard Zimon
Internal Medicine 60 years experience
Feb 11, 2015
Last updated Dec 4, 2021


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