From my reading of the available studies, there is no evidence that azithpmycin adds much to the effectiveness of HCQ, and it is dangerous to prescribe it along with HCQ unless you are monitoring the patient’s EKG. Too high a risk of fatal arrhythmia in those with slow cardiac muscle repolarization.
There is, however, fairly strong evidence that a zinc supplement added to HCQ greatly improves its effectiveness.
The other critical factor is vitamin D3 nutrition. Those who encounter the virus with adequate vitamin D3 nutrition (25-hydroxyvitamin D above 30 ng/mL) are far less likely to have anything but mild covid symptoms. Everyone should be taking vitamin D3 5000 IU daily to prepare your immune system to encounter the virus.
In my opinion as a physician with 40 years of experience and who has studied the evidence as it has accumulated this year (although no single piece is perfect) it is tantamount to malpractice to send a patient who has recent onset of symptoms of Covid home from a clinic or ER without a prescription for HCQ, plus instructions to take zinc 150-200 mg a day, vitamin D3 10,000 IU daily and vitamin C 3000 to 6000 mg three times a day. I have the felling that this is occurring frequently, however. Too many people are bouncing back with low oxygen levels and winding up in ICU.
Principle of medical ethics: When the available evidence is not perfect, you must act on the basis of what evidence you DO have.