A second herbal smoking product in a week has been ordered off retailers' shelves.
The Ministry of Health has ordered Juicy Puff Super Strength to be pulled from sale, saying it contains the drug phenazepam.
Phenazepam was also detected in another product - the synthetic form of cannabis, Kronic Pineapple Express - and it was removed from sale on Thursday.
The drug is available only in Russia, where it is used to treat epilepsy.
The Ministry is advising the public not to consume Juicy Puff Super Strength and to seek medical advice if they are feeling unwell after doing so.
It adds that it is contacting the company supplying the product, Cosmic Corner Ltd, requiring it to immediately cease supplying it.
The company says it will comply with the Ministry's directive but adds that Juicy Puff Super Strength is not intended to contain phenazepam, and Cosmic Corner was unaware that it did.