MedlinePlus: Drug, Supplements, and Herbal Information Prescription and over-the-counter medication information is from MedMaster, a product of the American Society of Health-System Pharmacists (ASHP) and USP DI® Advice for the Patient® , a product of the United States Pharmacopeia (USP).
For additional drug information, see the MedlinePlus drug therapy topic pages. Information on herbs and supplements from Natural Standard©.
