Mexican vet gear

I am thinking about getting some Ttokkyo nandrolone and Stanol V tabs and wanted to know if anyone has had any experience with the sterility of Ttokkyo’s injectables.
This will be my first cycle and I want to keep it safe (no ass infection from dirty shit).
I know there are better drugs for a first cycle but I’ve read that deca is good for the joints and my knees are fucked up.