Probably every US soldier in Nam took them. I know two of my friends did.
I took them when I was 13-14 living in South America, and again when I was 18 back in the States. Chloroquine (the first time) gave me an upset stomach. HydroxyChloroquine (the second) did not.
I’m now 71. So far, so good
Plus both of these drugs are regularly prescribed for lupus and rheumatoid arthritis.
Take them or don’t take them. But you’ll die from virus before you die from these drugs.
The question is does it work? If the answer is no there is no benefit worth the risk. I don’t see why this is so hard for a layman to understand.