Calcium supplements 'need annual monitoring'.

Rise in health problems associated with high calcium levels attributed to OTC supplement use.

Patients taking OTC calcium supplements should have their treatment monitored on an annual basis, US experts have said.

University of Pennsylvania School of Medicine researchers warn that health problems associated with high calcium levels are on the rise.

The rise in such problems since the early 1990s is largely due to increasing use of OTC vitamin D and calcium supplements, Dr Ami Patel and Dr Stanley Goldfarb said.

They suggest that, because calcium supplementation is now the principal cause of such problems, the syndrome should be renamed. It should, …