Just to be contrarian to all of you fine folks, I had the exact opposite effect from tesamorelin.
I was about 6 weeks in to a cycle, and I woke up one night with a migraine. Not especially unusual for me - maybe I didn't have caffeine late enough, maybe my CPAP was whack, whatever. That was a Wednesday. Happened again on Thursday, but worse. Woke up on Friday around 3:30a with such an intense migraine I was considering going to the Emergency Room.
I then realized that, for the past week, I had little itchy spots on my abdomen. Also not terribly unusual, but then it dawned on me, they were where I had pinned my 2mg tesamorelin dose in the PM. I seemed to be having an escalating histamine response to it. I stopped taking the tesa, and the migraine went away the very next night. I was pinning CJC1295 no-dac and Ipamorelin at the same time (I was really just after the Ipa, but my vendor didn't have a Tesa/Ipa blend in stock at the moment). I've continued the CJC/IPA, but dropped down to just an AM pin. I may return to the evening pin as well just to see.
Anywho, that's my story with Tesamorelin and migraines. I don't know that I'll be returning to my tesa cycle after this experience!