Quercetin works, and is otc.
ECGC works but less well, and is otc.
Hydroxychlorquine works, and is prescription. It’s precursors historically are chloroquine and quinine, the latter of which is available otc as pills or good small batch tonic waters.
Ivermectin works several ways beyond zinc (it is ant-viral and anti-inflammatory), is prescription for humans and dogs (exactly “Heartgard”), but is also available without a prescription for horses. Effectiveness demonstrated here:
When the bug bites me, I’m hitting it with everything I have and a doctor will prescribe.
!Thank you!