Instead of long term Doxy use look at other things that were used to deal with Malaria and repurpose them.
They have looked at Ivermectin and HCQ.
I saw some studies dealing with Ovarian cancer.
However, people who are on Plaquenil probably still get cancer. They should look if it is less.
I now have a script for it. Been putting off taking the drug
Individuals on long-term exposure to hydroxychloroquine/chloroquine are not at lower risk of cancer. However, hydroxychloroquine/chloroquine may lower the risk of metastatic cancer and death.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5679565/
The half-life of Plaquenil is about 40 to 50 days. In other words, it takes about 40 to 50 days for your body to get rid of half of a dose of Plaquenil. It typically takes about five half-lives for a drug to leave your body completely. This means that Plaquenil stays in your system for about 200 to 250 days.