2025 Jul National Institutes of Health
The researchers observed advanced cavernosal smooth muscle relaxation and increased amounts of nitric oxide synthase
Even safety data on TB-500 (synthetic TB4) is relatively scarce, with only a few studies reporting the potential side effects of its systemic application: In a 2010 study in 10 participants, TB4 caused occasional mild to moderate symptoms like headache and dizziness but no serious reactions or toxicities, even at doses up to 1260mg, administered daily for up to two weeks
The amylin receptor agonism it produces slows gastric motility specifically during the postprandial window
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