Homeopathic drugs are drugs under the law. The initials "HPUS" on the label of a drug product assures that legal standards of strength, quality, purity and packaging exist for the drug product within the package. The active ingredients are official Homeopathic Drug Products and are found in the current Homœopathic Pharmacopœia of the United States. The standards which must be met in order to append HPUS to a substance or a product are established by the Homœopathic Pharmacopœia Convention of the United States, a non-governmental, non-profit scientific organization composed of experts in the fields of medicine, arts, biology, botany, chemistry and pharmacy who have had appropriate training and experience and have demonstrated additional knowledge and interest in the principles of homeopathy. The Convention is an autonomous body which works closely with the Food and Drug Administration and homeopathic organizations notably the American Institute of Homeopathy and the American Association of Homeopathic Pharmacists. Guidelines are published for the prescriptions or over-the-counter status of homeopathic drug products.