The UK Food Standards Agency has alerted consumers to the presence of dangerous levels of arsenic in Fangocur mineral supplement drink, a product of Austria.
Fangocur is sold only over the Internet, and is not available in stores in the UK.
The UK government has received two reports of illness in the Chelsea area that appear to be linked to consumption of these drinks. Reported symptoms included dizziness, heart palpitations and stomach cramps.
Arsenic is a naturally occurring mineral with several industrial uses. Acute arsenic poisoning can produce gastrointestinal upsets, kidney failure and liver damage. Arsenic also is a know carcinogen.
The Food Standards Agency offers the following advice to consumers:
"You should not drink this product. If you have consumed this product and feel ill as a result, contact NHS Direct on 0845 4647 or speak to your doctor."