There are tens of thousands of men taking injectables in the US and worldwide today who completely bypass the medical gatekeeping establishment. These injectables have been shown to reduce fertility to nil and last for up to 6 months.
The specific one in question here (very dangerous in small doses, do not seek) is https://en.wikipedia.org/wiki/Trestolone
These men also have an extremely high risk of side effects (as they are taking some of the strongest androgens) including:
- Losing fat
- Getting extremely strong and muscular
- Deepening of the voice
- Awful sleep disruption which leads to irritability, with profoundly violent and sexual dreams
- Much lower patience
- A sense of high-energy
- Acne all over the place, that becomes cystic and doesn't respond to typical treatment
- Big increase in body hair
- Big loss of head hair
- Enormously increased chances of death from heart disease or liver or kidney failure
Most guys are taking this for the muscle and energy effects, and consider sterilization a side effect. It's when the same molecule is being looked at from the perspective of temporary sterilization as the desired effect that all the bodybuilder stuff becomes the side effect.