FDA Supports Sound Scientific Research
The FDA has an important role to play in supporting scientific research into the medical uses of cannabis and its constituents in scientifically valid investigations as part of the agency’s drug review and approval process. As a part of this role, the FDA supports those in the medical research community who intend to study cannabis by:
Providing information on the process needed to conduct clinical research using cannabis.
Providing information on the specific requirements needed to develop a human drug that is derived from a plant such as cannabis. In December 2016, the FDA updated its Guidance for Industry: Botanical Drug Development, which provides sponsors with guidance on submitting investigational new drug (IND) applications for botanical drug products.
Providing specific support for investigators interested in conducting clinical research using cannabis and its constituents as a part of the IND or investigational new animal drug (INAD) process through meetings and regular interactions throughout the drug development process.
Providing general support to investigators to help them understand and follow the procedures to conduct clinical research through the FDA Center for Drug Evaluation and Research (CDER) Small Business and Industry Assistance group.
To conduct clinical research that can lead to an approved new drug, including research using materials from plants such as cannabis, researchers need to work with the FDA and submit an IND application to CDER. The IND application process gives researchers a path to follow that includes regular interactions with the FDA to support efficient drug development while protecting the patients who are enrolled in the trials. An IND includes protocols describing proposed studies, the qualifications of the investigators who will conduct the clinical studies, and assurances of informed consent and protection of the rights, safety, and welfare of the human subjects. The FDA reviews the IND to ensure that the proposed studies, generally referred to as “clinical trials,” do not place human subjects at an unreasonable risk of harm. The FDA also requires obtaining the informed consent of trial subjects and human subject protection in the conduct of the clinical trials. For research intending to develop an animal drug product, researchers would establish an INAD file with the Center for Veterinary Medicine (CVM) to conduct their research, rather than an IND with CDER.
FDA is committed to encouraging the development of cannabis-related drug products, including CBD. Those interested in cannabis-derived and cannabis-related drug development are encouraged to contact the relevant CDER review division and CDER’s Botanical Review Team (BRT) to answer questions related to their specific drug development program. The BRT serves as an expert resource on botanical issues and has developed the Botanical Drug Development Guidance for Industry to assist those pursuing drug development in this area. FDA encourages researchers to request a Pre-Investigational New Drug application (PIND) meeting to discuss questions related to the development of a specific cannabis-derived and cannabis-related drug product.
Please note that certain cultivars and parts of the Cannabis sativa L. plant are controlled under the Controlled Substances Act (CSA) since 1970 under the drug class "Marihuana" (commonly referred to as "marijuana") [21 U.S.C. 802(16)]. "Marihuana" is listed in Schedule I of the CSA due to its high potential for abuse, which is attributable in large part to the psychoactive intoxicating effects of THC, and the absence of a currently accepted medical use in the United States. From 1970 until December of 2018, the definition of “marihuana” included all types of Cannabis Sativa L., regardless of THC content. However, in December 2018, the Agriculture Improvement Act of 2018 (also known as the Farm Bill) removed hemp, a type of cannabis that is very low in THC (cannabis or cannabis derivatives containing no more than 0.3% THC on a dry weight basis), from controls under the CSA. This change in the law may result in a more streamlined process for researchers to study cannabis and its derivatives, including CBD, that fall under the definition of hemp, a result which could speed the development of new drugs containing hemp.
Conducting clinical research using cannabis-derived substances that are considered controlled substances under the CSA often involves interactions with several federal agencies. For example:
Protocols to conduct research with controlled substances listed in Schedule I are required to be conducted under a site-specific DEA investigator registration. For more information, see 21 CFR 1301.18.
National Institute on Drug Abuse (NIDA) Drug Supply Program provides research-grade marijuana for scientific study. Through registration issued by DEA, NIDA is responsible for overseeing the cultivation of marijuana for medical research and has contracted with the University of Mississippi to grow marijuana for research at a secure facility. Marijuana of varying potencies and compositions along with marijuana-derived compounds are available. DEA also may allow additional growers to register with the DEA to produce and distribute marijuana for research purposes. DEA that, as the result of a recent amendment to federal law, certain forms of cannabis no longer require DEA registration to grow or manufacture.
Researchers work with the FDA and submit an IND or INAD application to the appropriate CDER divisions or other center offices depending on the therapeutic indication or population. If the research is intended to support the approval of an animal drug product, an INAD file should be established with CVM. Based on the results obtained in studies conducted at the IND or INAD stage, sponsors may submit a marketing application for formal approval of the drug.