Last week, the British equivalent of the FDA issued a warning about the over-use of antidepressants in children under 18. The agency said the benefits didn't outweigh the risks of drugs such as Paxil and Zoloft, which have been linked with suicidal thoughts. Prozac, which is in the same class as those other drugs, the so-called "selective seratonin re-uptake inhibitors," was excluded from the warning. Dr. Jon Hallberg is medical director of the Primary Care Center at the University of Minnesota. He says the advisory presents a real challenge for those who treat children.