The rest of the title comes from my experience in many medical settings over the decades
Pseudomonas aeruginosa Pseudomonas spp
undergoes rigorous testing for heavy metals, endotoxins (less than 0.2 EU/mg), and residual solvents, ensuring safety for these sensitive ophthalmic applications
Compounders generally have to follow widely accepted quality standards that lay out how often they need to monitor for contamination, what kinds of tests they need to perform on their drugs and other requirements
It may help with flu, chronic bronchitis, and COPD symptoms, but the evidence is weak for its purported ability to thin mucus during a cold and for general claims of "immune support." Very preliminary studies suggest benefits for polycystic ovary syndrome (PCOS), Sjogren's syndrome, schizophrenia, compulsive behavior, and anti-aging