You can search this site for prescriptions medications, but will need to know the manufacturer/maker if there is more than one, especially if you use a generic version of the medication: To see the ingredients you will need to click on the correct version of the medication and maker in the results, then scroll down to "Ingredients and Appearance" and click it, and then look at "Inactive Ingredients," as any gluten ingredients would likely appear there, rather than in the Active Ingredients area. https://dailymed.nlm.nih.gov/dailymed/   

I forgot, why are you doing the gluten challenge again? I ask only because it sounds like you will be gluten-free either way, even if your test results are negative.

You symptoms could certainly be related to gluten contamination, and for those who are really sensitive it can last days or longer. This article, and the comments below it, may be helpful:    

This article, and the comments below it, may be helpful:    

Has anyone found a gluten free adderall generic?