CBD products in the UK carry less of the hemp-derived compound than advertised, according to research that looked at four product categories.
The study, by researchers from Loughborough University and horticulture specialist Bridge Farm Group, was published last month in the Journal of Cannabis Research, a scientific journal of Berlin-based Springer Nature.
The range of deviation from advertised CBD concentrations differed among product types but was not related to product price, the study showed. The authors said the research embraced a wider range of products than previous similar studies in the UK: 13 tinctures, 28 oils, 10 e-liquids, and 11 drinks, all of which were purchased online in the UK.
Few products in the recent study were found to have CBD concentrations within 10% of the levels advertised, with most exhibiting less than the amounts stated on the labels. Only 5 of 63 products contained concentrations within 10% of that advertised, the research showed. CBD oils deviated less than tinctures, e-liquids and drinks.
“These findings may be indicative of poor manufacturing standards, or that CBD undergoes degradation in consumer products,” the study observes. “(The study) reinforces concerns over the quality of CBD-containing consumer products and may highlight the need for improved regulation of such products.”
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