https://americasfrontlinedoctors.org/ which takes you to https://speakwithanmd.com/americasfrontlinedoctors/
https://m.indiamart.com/proddetail/ozi-500-azithromycin-500mg-tablets-3-tablets-15702973362.html?undefined
https://rxpharmacity.com/product/azithromycin-500-mg/
https://www.joewongcomedy.com/study-advice/how-long-does-it-take-for-azithromycin-to-work-for-sinus-infection/
https://www.nhs.uk/medicines/azithromycin/
I ordered from RX in Canada
Did a lot of research about dosages for adults and children.
Also researched what kind of antibiotics are ordered for different infections.
Azithromicyn, Zinc & 50,000 IU of vitamin D3 is recommended once a week while treating for COVID-19 along with the Hydroxychloroquine or Ivermectin.