I just took my second dose (TF 100) and within 1/2 hour to hour I got warm, foggy-brained and slightly nausious. I felt almost like I'd taken a downer or sleeping pill. I got sleepy and when I was reading words on my monitor I felt like I was spinning! This wore off within the hour. I'm still a little not right in the belly, but just wondering if these symptoms are normal? Thinking I'll wait another day to try another! Wow!