PTCB is a national credentialing organization accredited by the NCCA. The website has information about certificate programs, continuing education, and testing; it also has a jobs board (Career Center).
NPTA is a trade organization that provides continuing education, advanced certification, and advocacy. They also offer an online jobs board (Career Center).
MedWatch is the FDA's safety alert site. Citizens and healthcare professionals can report adverse events, which the FDA will then research before posting here. This site is funded by the US Government.
Part of Public Citizen, a consumer advocacy watchdog, this site contains information on prescription and OTC medications and supplements. It is funded by donations and subscriptions. Limited information is available to non-subscribers.