Herbal products can have harmful side effects too, says a study, published in the Canadian Medical Association Journal. It was corroborate by an incident in Canada when a man landed up in a hospital for high-blood pressure emergency after over-consuming homemade tea made from licorice root.
"Excessive amounts of some herbal products can have harmful side effects," said Jean-Pierre Falet from McGill University in Canada. And products containing licorice root extract can raise blood pressure leading to headache and chest pain.
"Products containing licorice root extract can raise blood pressure, cause water retention and decrease potassium levels if consumed in excess," Falet said.