Clinicaltrials.gov
As of 07/06/15, this contained 193,853 trials sponsored by the National Institutes of Health, other federal agencies, and private industry. Studies listed in the database are conducted in all 50 states and in 190 countries.
Use this to see the current research environment for your medical product.
AVMA Animal Health Studies Database
Database of veterinary clinical trials from the American Veterinary Medical Association.
Be sure to keep on top of the literature with Database Search Alerts!