Bacterial and fungal contamination is quite common with plant derived dietary supplements. Ideally a microbial count should be performed. We did not expect to see various bacterial profiles in a vacuum packed food supplement. Also, Bacillus subtilis contamination in Herbalife has been reported before (Stickel et al, Journal of Hepatology). Please see this paper on plant origin dietary supplements and contamination potential.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6362155/
This can actually promote spoilage and can lead to damaging consequences.
Hops use other than in Beers - such as direct consumption has been shown to be toxic to animals and also adverse events have been noted in humans.Chamomile is usually safe, but its interaction with other herbs and herbal metabolites could lead to systemic toxicity. This is always a concern with polyherbal formulations.