I'm not sure why you're attacking the Freepers above. I've seen directly where many generic drugs simply don't work the way that the name brand varieties do. The doctors administering to those patients did not recommend taking a higher dosage and in some cases specified the need for the name brand rather than risk the patient's health.
In life or death scenarios, there may not be the time to go through that routine.
OTOH, I like the suggestion to take more if the doctor sanctions it. They could always increase the dosage and prescription amount.
Kneejerk reactions happen here often, but this seems to be a valid concern for anyone who knows someone with HIV.
I always remember that when I hear or read about HIV.