1. o2 saturation by pulse-oximeter below 93% 2. co-morbidities: any pre-existing cardiac disease, pulmonary disease, diabetes 3. arrhythmias and/or history of arrythmia 4. psoriasis and/or history of psoriasis 5. neuropathy or myopathy and/or history of these 6. hypoglycemia and/or history of hypoglycemia 7. pre-existing hepatic disease 8. pre-existing renal disease 9. use of antacids within 1 week 10. use of antiobiotics within 1 week 11. pregnancy 12. rt-pcr performed \>7 days prior to enrollment

1. o2 saturation by pulse-oximeter below 93% 2. co-morbidities: any pre-existing cardiac disease, pulmonary disease, diabetes 3. arrhythmias and/or history of arrythmia 4. psoriasis and/or history of psoriasis 5. neuropathy or myopathy and/or history of these 6. hypoglycemia and/or history of hypoglycemia 7. pre-existing hepatic disease 8. pre-existing renal disease 9. use of antacids within 1 week 10. use of antiobiotics within 1 week 11. pregnancy 12. rt-pcr performed \>7 days prior to enrollment

o2 saturation by pulse-oximeter below 93% co-morbidities: any pre-existing cardiac disease, pulmonary disease, diabetes arrhythmias and/or history of arrythmia psoriasis and/or history of psoriasis neuropathy or myopathy and/or history of these hypoglycemia and/or history of hypoglycemia pre-existing hepatic disease pre-existing renal disease use of antacids within 1 week use of antiobiotics within 1 week pregnancy rt-pcr performed >7 days prior to enrollment

o2 saturation by pulse-oximeter below 93% co-morbidities: any pre-existing cardiac disease, pulmonary disease, diabetes arrhythmias and/or history of arrythmia psoriasis and/or history of psoriasis neuropathy or myopathy and/or history of these hypoglycemia and/or history of hypoglycemia pre-existing hepatic disease pre-existing renal disease use of antacids within 1 week use of antiobiotics within 1 week pregnancy rt-pcr performed >7 days prior to enrollment

1. o2 saturation by pulse-oximeter below 93% 2. co-morbidities: any pre-existing cardiac disease, pulmonary disease, diabetes 3. arrhythmias and/or history of arrythmia 4. psoriasis and/or history of psoriasis 5. neuropathy or myopathy and/or history of these 6. hypoglycemia and/or history of hypoglycemia 7. pre-existing hepatic disease 8. pre-existing renal disease 9. use of antacids within 1 week 10. use of antiobiotics within 1 week 11. pregnancy 12. rt-pcr performed >7 days prior to enrollment

1. o2 saturation by pulse-oximeter below 93% 2. co-morbidities: any pre-existing cardiac disease, pulmonary disease, diabetes 3. arrhythmias and/or history of arrythmia 4. psoriasis and/or history of psoriasis 5. neuropathy or myopathy and/or history of these 6. hypoglycemia and/or history of hypoglycemia 7. pre-existing hepatic disease 8. pre-existing renal disease 9. use of antacids within 1 week 10. use of antiobiotics within 1 week 11. pregnancy 12. rt-pcr performed >7 days prior to enrollment