The FDA placed it on a Category 2 do-not-compound list in 2023 over impurity and immune-reaction concerns, so no licensed compounding pharmacy can prepare it either
Spleen-selective co-delivery of mRNA and TLR4 agonist-loaded LNPs for synergistic immunostimulation and Th1 immune responses
But a 2025 interview study of 29 self-reported users found something else entirely average age 39, more than three in four men, most introduced to it through gym and bodybuilding circles years before any tanning trend existed online
This article explains what IV quercetin is, how it may fit into mast cell support, who may be a candidate, what safety issues matter, and how it compares with oral quercetin
and Severe Obesity Prevalence in Adults: United States, August 2021-August 2023 Key findings Data from the National Health and Nutrition Examination Survey [Internet]