A prescription is not guaranteed. It is up to the doctor to recommend the best treatment. Doctors will submit your prescription directly to the pharmacy of the member's choice. Doctors will never issue prescriptions for substances controlled by the DEA and certain other drugs which may be harmful because of their potential for abuse. These include, but are not limited to, antidepressant drugs such as Cymbalta, Prozac, Percocet, Oxycodone, and Zoloft. Non-therapeutic drugs such as Viagra and Cialis are not prescribed by network doctors.