I had surgery for Thyroid Cancer and am not on any synthetic hormone until after I have RAI treatment. I went in for a TSH blood test, as I need an elevated TSH. If I took Nyquil, the night before, say about 20 hours before the test, that wouldn't affect my score? I am only second guessing it, because my TSH was 87, and yet, I still feel ok. I am fatigued and experiencing memory issues, and focusing, but relatively alright. I looked at its ingredients and don't think there would be any reason that it would ...