Iron is needed for our red blood cells to carry oxygen, but when inflammation is present, the liver retains iron to avoid the negative bacteria being feed iron. From National Institute of Health: “In anemia of inflammation, you may have a normal or sometimes increased amount of iron NIH external link stored in your body tissues, but a low level of iron in your blood. Inflammation may prevent your body from using stored iron to make enough healthy red blood cells, leading to anemia.”
Below are excerpts from Medical News Today on how iron levels are reduced during inflammation:
Altered availability of iron affects the levels of hemoglobin in red blood cells (erythrocytes) that transport oxygen around the body. In the more severely affected groups, hemoglobin remained low up to 90 days post-infection.

Low serum iron, high serum ferritin and high serum hepcidin are characteristic of inflammatory anemiaTrusted Source, which is common with many illnesses, and leads to fatigue, weakness, reduced cardiovascular performance and exercise tolerance, and impaired learning and memory capacity.”
https://www.medicalnewstoday.com/articles/do-low-iron-levels-explain-long-covid-symptoms#Why-study-iron-levels-after-COVID-19?
NO is likely an important mediator of the anemia of chronic disease in humans.
https://jag.journalagent.com/tjh/pdfs/TJH_26_4_197_200.pdf
I reviewed Synthroid and Plaquenil on drugs.com for interaction with arginine and found no interaction.
“No interactions were found between arginine and Synthroid.”
https://www.drugs.com/drug-interactions/arginine-with-synthroid-
Listing of drugs that interact with arginine: (Does not include Plaquenil)
https://www.drugs.com/drug-interactions-all/arginine,l-arginine.html?letter=P
I would recommend focusing on the vegetables that have nitrate with citrus fruit to produce nitric oxide. If you take an arginine supplement, I would recommend starting at one gram. I always start low with all new supplements and see how I react and then I can increase it slowly.

If you would like more details on what I have been doing, feel free to private message.