Are there medical treatments for alzheimer's?

Not exactly. We can treat many of the symptoms that people have and if diagnosed early enough we can slow functional decline. We currently cannot modify the course of the illness. There are behavioral interventions and medication interventions. Also working with caregivers can be extremely important.
Yes. Early alzheimer's might benefit from medical foods, which include axona and cerefolin-nac. Also, aricept, Exelon pill/patch, galantamine, (galantamine hydrobromide) and Namenda may be useful. None a cure, merely symptomatic support and modest control.