US: Your doctor has the right to cancel you as a patient.

But when would they do this? They want to get paid. But if they find out you are self-treating with something, they don’t want your side-effects blamed on them and they might not accept you as a patient ever again simply to avoid potential liability.

Be careful. Do not self treat with something you do not understand. It can kill you. One guy who took fish medication already died from self-treating his COVID-19. Here’s the article about a man in Arizona who died taking fish meds.

A man has died and his wife was in critical care Monday after the couple ingested non-medication chloroquine phosphate in hopes of preventing the new coronavirus, Banner Health announced in a press release.

https://www.azcentral.com/story/news/local/arizona-health/2020/03/23/covid-19-man-dies-wife-hurt-after-self-medicating-chloroquine/2903324001/

There are different forms of chloroquine. Some will kill you. His inability to comprehend his own ignorance killed him.