-LRB- CNN -RRB- -- China has suspended exports of the Aqua Dots toys contaminated with a chemical that can convert to a powerful `` date rape '' drug , the state-run Xinhua news agency reported Saturday . The toys have caused some children who swallowed the craft toys to vomit and lose consciousness . China suspended exports of the Aqua Dots toys that contain a chemical that converts into a `` date rape '' drug . The agency said that the General Administration of Quality Supervision , Inspection , and Quarantine -LRB- AQSIQ -RRB- has ordered an investigation by quality control agencies and will release results as soon as they are available . The AQSIQ did not reveal the name of the toys ' producer , Xinhua said . U.S. safety officials voluntarily recalled about 4.2 million of the Chinese-made toys Wednesday . Scientists have found the highly popular holiday toy contains a chemical that , once metabolized , converts into the toxic `` date rape '' drug GHB -LRB- gamma-hydroxy butyrate -RRB- , Scott Wolfson , a spokesman with the U.S. Consumer Product Safety Commission -LRB- CPSC -RRB- , told CNN . `` Children who swallow the beads can become comatose , develop respiratory depression or have seizures , '' a CPSC statement warned . The arts-and-craft beads , which have been selling since April at major U.S. retail stores under the name `` Aqua Dots , '' have also been distributed in Australia under the name `` Bindeez Beads . '' The Bindeez toys were recalled Tuesday by Melbourne-based Moose Enterprise Pty. Ltd. after three children in Australia swallowed large quantities of the beads and were hospitalized . `` I was so frightened because I thought she was n't going to make it , '' Heather Lehane told CNN affiliate Network 7 of her 10-year-old daughter , Charlotte , who was hospitalized in Australia after ingesting some of the beads . In the United States , the Washington-based safety commission said it has in recent days received two reports detailing the severe effects of the digested beads , which are part of a craft kit aimed at kids 4 years and older . The CPSC said a boy nearly 2 years old `` swallowed several dozen beads . He became dizzy and vomited several times before slipping into a comatose state for a period of time . '' The commission said the toddler was hospitalized and has since `` fully recovered . '' The second incident involved a child who vomited , fell into a coma and was hospitalized for five days . It was not immediately clear whether the child had made a full recovery . Toronto-based toy distributor Spin Master Ltd. stopped shipping the Aqua Dots toys and asked retailers to pull them off their shelves , where they were previously sold for $ 17 to $ 30 . Anyone with Aqua Dots at home should return the product to the company , CPSC spokeswoman Julie Vallese said . The toy had been named toy of the year in Australia and recently crested Wal-Mart 's list of top 12 Christmas toys . Wal-Mart on Thursday listed the toys on its Web site as `` out of stock online '' and had removed them from their top toy list as well . This latest recall is part of a larger batch of recalls of Chinese-made toys that have swept across the country . Last month alone , U.S. government safety officials and retailers voluntarily recalled at least 69,000 Chinese-made toys over concerns of excessive amounts of lead paint , which can cause hazardous lead poisoning . E-mail to a friend CNN 's Janine Brady , Jason Carroll , Laura Dolan , Julie O'Neill and Leslie Wiggins contributed to this report .