Customs officials have seized more than one million counterfeit anti-anxiety tablets at the Zurich airport, stopping the shipment while it was in transit between China and Egypt. The Swiss Agency for Therapeutic Products, Swissmedic, said the tablets were counterfeits of the Xanax compound made by Pfizer. They were found in four crates that weighed over 400 kg. Swissmedic said in a statement that laboratory tests showed the intercepted tablets contained no active ingredients, adding that they could not be recognised as counterfeit at first glance. The fake drugs will be destroyed. Swissmedic has informed the international health authorities, particularly those in China and Egypt, of the seizure.