For the very same reason toxinsAccutane does not cause impotence - period. The rate of depression of people taking accutane is the same as the rate of depression of people taking antibiotics. Look it up. If this information bothers you then I suggest you never take an antibiotic for the rest of your life - which will be very short without the help of medicine.
A great number of these drugs are toxic
Besides there are always herbal remedies for infections