I've read that a lot of people have problems with erectile dysfunction and loss of libido after taking nandrolone and trenbolone ...

This causes a decrease in dopamine levels and increased stress transmitters (norepinephrine, Epinephrine)

Therefore it is necessary to reestablish neurotransmitters back into balance.
Dbol is the only anabolic steroid , which is an antagonist of dopamine.
By using a 10-mg daily dbol starts to raise the level of dopamine and erection will gradually return. This is a trick.

Long years for many men without erection and libido were unnecessary when it's so simple.