Maybe it's the sustained release. I might try that and take it with a light meal. NAC thins mucus which is why I figured it gives me acid reflux. Treating serious treatment-resistant OCD is one of the strongest supplement indications (out of any supplement) in my mind (a few good studies). Very nice that it clears your mind. I think I am in a hyperglutamatergic state (there are a few threads here on that subject I think) and NAC is very good if you have too much glutamate. Time to study the orexin system. EDIT: Thoughts, not recommendations.