Skepticblog » Get Fed Up: Report Medical Quackery to the FDA
Medical practice quackery has to be reported to the FTC, https://www.ftc.gov/ftc/contact.shtm as I just did to a chiropractor that claimed they could help with “ADHD”, “Bedwetting”, “PMS”, “Asthma”, “Ear infections”, “Colic”, and even “Allergies” The FTC “wizard” is a bit cumbersome, but you eventually get 3500 characters to describe your complaint after about 50 clicks.
https://skepticblog.org/2010/01/14/get-fed-up-report-medical-quackery-to-the-fda/
Update: Forgot to link to a great paper summarizing the common false claims made and a summary of the current evidence for each claim from the New Zealand Medical Journal Chiropractic claims in the English-speaking world