Before you go forward with another medication, avoid all the synthetic dyes, not just the red or blue. You were part way there with eliminating the red. All these dyes are made from the same thing - petroleum. So if red bothered him, so would the blue, green, yellows, etc. If I were you I would check out the Feingold Program. You'll learn that artificial flavorings (such as vanillin) and the preservatives BHA,BHT & TBHQ are also from petroleum. You may find that those tics will go away. Here's a good link: http://feingold.org/overview.php