Yes, it is. We value our customers and are looking for a long-term relationship, not one-time payment by providing fake products.
Spectros, Zptropin, Jintropin have elements verifying authenticity (stickers, codes) to ensure they are real.
Norditropin doesn’t have the security systems but these brands are almost impossible to counterfeit because pen/cartridges are patented and expensive to produce illegally.
We also run third-party lab tests on the HGH we sell. You can check the results here.