Thanks for the response. It could be that mine are just smaller ones perhaps but that's just a guess. I have found it takes much longer to subdue the headache if I let it really get going, or especially if I take the triptan on a full stomach. I've only had maybe 2-3 "clusters" over the last 10-12 years and they seem to disappear after 2-4 weeks so I'm hopeful that will happen here. Given the pain that some of the posters on this forum have gone though, I do feel fortunate so far. I've asked my doctor about also getting O2 to see if that would help without resorting to the triptans. I just wanted to be sure I wasn't getting into the overuse category and it wasn't clear if it was based on the number of milligrams consumed vs just the action of using them that counted as 'overuse'. I appreciate your input.