dr. spaeth calls "glacial." he declined to be interviewed on camera, but he shared email exchanges with us detailing his efforts to get the fda to act. spaeth says he suspected contamination, but his first inquiry went unanswered. when he emailed again asking if the lack of response was a lack of interest, he was referred to the fda's hotline for adverse reactions called medwatch. spaeth had tried the line, been transferred and put on hold before being disconnected, twice. five weeks later he was still frustrated. "will you tell me what your plans are?," he wrote. "i have 20 very worried patients and little to offer them." among the officials spaeth was writing to was daniel fabricant, then head of the fda's division of dietary supplements. >> we took that information. while it was helpful, it didn't make the whole case. we had to make the case at fda and we did, and removed the product successfully. >> narrator: one of his biggest complaints is the amount of time it took just to get somebody to call him back. he