I am a strong advocate of preventing side effects, rather than having to deal with them once they take place. Therefore, I would strongly recommend to use cabergoline, as in the worst of the cases it will only boost your libido. Also, if you are concerned with using it with a low dosage of trenbolone, you can as well reduce the dosage of cabergoline, to say 0.25 mgs E3D instead of E2D.