Eighteen-year-old Fidah Salem did not know anything about the ingredients listed on the 4 1/2-pound container of Cell-Tech Hardcore, but he liked the nutritional supplement's promise: "packs on muscle strength.''
So he persuaded his mother, Paula Smith, to spend $100 on it and other products last week at the GNC store at South Shore Plaza in Braintree.
Smith said she and her son did not know the US Food and Drug Administration recently warned against the use of some bodybuilding supplements - though not Cell-Tech Hardcore specifically - saying they might contain anabolic steroids, which are illegal.



