I have had problems going through TSA security. The screening equipment tends to identify "suspicious" areas on my body. This means that a TSA officer has to pat down that area. They usually never find anything and let me proceed. Today they also detected something on hand. I had an early flight so I had taken my supplements right before heading to the airport. I washed my hand before taking the supplements but not afterwards. I ended up being patted down twice and having all the items in my carry-on checked. After I was cleared I asked what might me "setting off" the screening equipment. They indicated that sometimes certain medications can be the cause. I "googled" "What medications affect TSA screening?" One ingredient that can affect the equipment is Glycerin, which is one of the ingredients in Lindberg's Lemon Bioflavonoid Complex. Since I hadn't wash my hands, there was likely a small residue on my hands and obviously it was in my system. I would be interested if anyone else has run into this issue. I have decided to not take my supplements whenever I travel. I'm not convinced that they provide any benefit and I definitely would like to avoid another the TSA experience like I had today