Hi Pete, Maca has no affect on Testosterone levels.
What exercise do you do?
What is your alcohol intake?
How does Testosterone affect your liver?
I ask these as you can raise your levels by reducing/cutting alcohol and simply hitting the heavy weights and doing squats/deadlifts..these movements increase free test. Combined with the right foods: lots of lean meat and lots of vegetables, and lots of sleep (8hrs) will do it. Add Zinc/ZMA and you will feel a lot better.
I ask about the liver as only oral Test tablets like Dianabol will affect your liver..injectable/transdermal will not.
Cheers, Nick