Sust Burning?

[Red Sea]

Hey i have been injection some sustonon called sust-a-ton it is 375 mg 1.5 cc amps.. Have u guys heard of them? And man do they burn going in..I had some other sust that i was useing till this came in and didnt even come close to burning that much! Any feed back guys would be appriciated.

[pip_squeek]

i am using sust250 and never heard of sust-a-ton. and even with sust25o and pain is normal with any kind of test