What are any medications that will cause a false positive on a nicotine test? I have read to cut out broccoli, cabbage, mustard, garlic, almonds, and horseradish. I am also on several meds and I do not want to fail this test or I will no longer be covered for insurance. I never went through one of these, but I have heard of people getting false positives and I want to stay far away from those. My current meds are my main concern, any advice?