Before I knew better, I bought Tirz 30mg from Cert-Pep back in September 2025. I was able to match the distinct crimp and cap of the vials to a batch that Uther released in mid-August 2025, batch ZE300805. Of course the peps are fine and work great, just way overpriced. But this just shows that Cert-Pep was sourcing from China in September 2025.