While it might stroke your ego to think that she needed stronger pills because of you, it's not the reason. For reasons stated above and others doctors change women's prescriptions.
As for your friend and his wife, it may very well be that it's his problem, especially if he did roids. He should get a sperm count done.
"Health Hazards
The major side effects from abusing anabolic steroids can include liver tumors and cancer, jaundice (yellowish pigmentation of skin, tissues, and body fluids), fluid retention, high blood pressure, increases in LDL (bad cholesterol), and decreases in HDL (good cholesterol). Other side effects include kidney tumors, severe acne, and trembling. In addition, there are some gender-specific side effects:
For men — shrinking of the testicles, reduced sperm count, infertility, baldness, development of breasts, increased risk for prostate cancer."
Info from
http://www.nida.nih.gov/Infofacts/Steroids.html