 Last year, a similar drug from Japanese drug maker Azai was approved. Doctors who treat Alzheimer's say approval is an important step after decades of failed experimental treatments. Patients and their families will have to weigh the benefits against the downsides, including regular IV infusions and potentially dangerous side effects like brain swelling. Questions remain about which patients should get the drugs and how long they might benefit. Ed Donohue, Washington. Well, we've got the 4th of July coming up.