Had an interesting reaction to the 20 mg I took yesterday. I think your right in that it was kind of strong. Well at first after 15 mins of taking it I had chest tightness but it went away when I stopped thinking about it and I felt great for like 6 hours and my blood pressure was normal. Later at one point I had shortness of breath for a second then it went away when I stopped thinking about it. I guess all of this is anxiety? Next time I'll cut it in half. I had a similar reaction once when I used to take adderal for add. Also sometiems when I even drink a cup of coffee I'll get heart palpitations. Hopefully the 10 mg will be ok