Anabolic steroid implants are allowed for veterinary use. But if someone diverts this for use in humans, it will be deemed as a distribution of a Schedule III drug leading to prosecution. The law on trenbolone differs in other countries. For instance, in Canada it is a Schedule IV drug. In Canada, all anabolic steroids are classified as Schedule IV drugs. In the UK, anabolic steroids are classified as Class C substances. Their possession can lead to a 2 year jail term, while their production and supply can lead to a 14 year jail term. But many countries do not have strict laws. In some places, you can even buy it over the counter.
What is of note with propionate, is that users have successfully incorporated it into cutting cycles as well. Especially people who tend to lose a lot of mass normally during extreme diet phases find this useful. By injecting every two or three days and using only 50-75 mg each time, no notable water builds up (or at least none that can't be fixed with proviron, arimidex or winstrol) and no fat is deposited, allowing a user to stay relatively lean. So this type of testosterone can be used to keep gaining or retaining mass until 2-3 weeks out of contest time with relatively little difficulty. Its best use is in bulking phases to pack on mass.