The triptan you are currently using is
Imitrex,
generic name Sumatriptan. The triptan that I use is Zomig Nasal Spray,
generic name Zolmitriptan. Some other examples of triptans are Maxalt, generic name Rizatriptan and Axert, generic name Almotriptan. It would be worth it to give one of these other triptans a try. I would suggest getting a triptan in a fast acting form, either a quick dissolve tablet or a nasal spray.