I thought the name looked familiar. I'm not a doctor and I only googled for 10 minutes. I tore my achilles last year. I would never take this drug. I hope I'm off base.

Wiki breadcrumbs

https://en.wikipedia.org/wiki/Chloroquine

https://en.wikipedia.org/wiki/4-Aminoquinoline

https://en.wikipedia.org/wiki/Quinoline

https://en.wikipedia.org/wiki/Quinolone_antibiotic#Tendons