Mayo Clinic dosage recommendations. It can be taken everyday. Trump said he takes zinc too.
https://www.mayoclinic.org/drugs-supplements/hydroxychloroquine-oral-route/proper-use/drg-20064216
That dosage corresponds to 5 liters of tonic water per week (ignoring the details on Hydroxychloroquine/quinine differences). If you’re drinking a liter bottle of tonic per day most days, you’re doing it right. It’s almost like the Brits knew what they were doing a century ago.