Here is a list of possible side effects I pulled off the internet from taking Androstenedione.
-Androstenedione supplementation may lead to elevated plasma estrogen concentration, which can lead to breast development in men, breast cancer, and pancreatic cancer.
-Using Androstenedione may lead to kidney and liver damage.
-You may also experience acne problems and oily skin - acne is associated with testosterone.
-It can lead to premature baldness in men.
-Taking Androstenedione can enlarge prostates, reduce sperm production and increase aggression.
-Can also lead to testicles shrinkage, infertility, loss of libido, and even impotence.
-Androstenedione can disrupt female menstrual cycles.
-Deepens voice and increase facial hair growth, and can also cause enlarged clitoris.
-Can lower HDL cholesterol (the good kind).