Supplements are not regulated by the FDA as rigorously as other OTC medications, however, so there is no guarantee about their content and efficacy
However, in vivo efficacy is severely limited by poor bioavailability of some Phytobiotics and Herbal (162, 163)
Grade 1 Few focal inflammatory infiltrate in the mucosa and lamina propria, epithelial hyperplasia (25% involved)
We identified a number of genes whose expression is associated with increasing emphysematous destruction and found that pathways enriched among these genes were involved in the immune response and tissue remodeling
(PubMed) Hazane-Puch F, Champelovier P, Arnaud J, et al
The practical issue is that bacteriostatic water contains benzyl alcohol as a preservative