Experts have dismissed claims a herbal remedy can treat cancer.
Complementary and cancer specialists said it was "irresponsible" to suggest Carctol, a mixture of eight remedies, was linked to 'miraculous' recoveries.
The claims were made by Dr Rosie Daniel, the former head of the Bristol Cancer Centre, which promotes holistic treatment of the disease.
But she admitted she could not be certain it was the remedy which was responsible for patients' recoveries.
Carctol is based on traditional Hindu treatments. People taking it are also advised to adhere to a non-acidic diet and drink large quantities of water - up to five litres a day.
Carctol was devised by Dr Nandlal Tiwari from Rajasthan, who has been giving it to patients for 25 years.
It is suggested it works by creating an alkaline environment in which acidic cancer cells cannot survive.
Dr Daniel, who prescribes Carctol before and after patients have had chemotherapy, said Dr Tiwari's theory was that it worked by helping the excretion of acids from the body.
She said it was a "detox" remedy, which pushed the kidneys, liver and bowel to excrete.
Source BBC News