[SeekAndFind]

From the above article, this seems to be the right way to use HCQ:

OCHSNER MEDICAL CENTER, LOUISIANA

Louisiana’s largest hospital system is prescribing hydroxychloroquine widely, according to its chief medical officer, Dr Robert Hart. “We have been using this from pretty early in the outbreak to see if this helps,” he said.

[Robert DeLong]

Ochsner is among the best in my opinion.