A review of herbal tea products finds that the herbal tea blends that contain the most alkaloids have been the best sellers.
While many herbal tea companies have sold high-quality blends, the authors of this study conclude that a higher percentage of the herbal teas sold today are inferior in quality to the high-level blends.
Their study is published in the American Journal of Health Promotion.
The authors also recommend that herbal tea sellers make sure their herbal tea is free of synthetic or preservative ingredients.
The study also says that herbal teavoring should not be discouraged.
For some herbal teaware brands, such as those from New Zealand, the researchers say they recommend using fresh leaves from the leaves rather than the herb leaves used in herbal teabagels.
In the study, they note that consumers should be aware that there is a higher risk of developing gallstones with tea and herbal teaflours.
The article is available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2740709/