A pharmacist says certain widely used dietary supplements can pose health risks, including excessive bleeding and serotonin syndrome. The warnings also extend to potential kidney damage in some cases.

The report frames the issue within the broader context of high public spending on supplements in the UK, citing figures that Britons spend billions of pounds each year on such products. It also emphasizes that the risks may vary depending on the supplement and the individual’s health and medication use.

While the focus is on dangers described by the pharmacist—such as extreme bleeding and serotonin syndrome—the sources provided do not offer specific details like which exact products were singled out, dosages, or the precise mechanisms involved. The coverage also does not independently corroborate the pharmacist’s claims within the excerpts, instead presenting them as an advisory aimed at consumer safety.