Nabiximols (USAN, trade name Sativex) is a specific Cannabis extract that was approved in 2010 as a botanical drug in the United Kingdom. Nabiximols is sold as a mouth spray intended to alleviate neuropathic pain, spasticity, overactive bladder, and other symptoms of multiple sclerosis; it was developed by the UK company GW Pharmaceuticals. In 2019 it was proposed that following application of the spray, nabiximols is washed away from the oral mucosa by the saliva flow and ingested into the stomach, with subsequent absorption from the gastro-intestinal tract. Nabiximols is a combination drug standardized in composition, formulation, and dose. Its principal active cannabinoid components are the cannabinoids: tetrahydrocannabinol (THC) and cannabidiol (CBD). Each spray delivers a dose of 2.7 mg THC and 2.5 mg CBD.
In May 2003 GW Pharmaceuticals and Bayer entered into an exclusive marketing agreement for GW's cannabis-based medicinal extract product, to be marketed under the brand name Sativex. "Bayer has obtained exclusive rights to market Sativex in the UK. In addition, Bayer has the option for a limited period to negotiate the marketing rights in other countries in European Union and selected other countries around the world."
In April 2011, GW licensed to Novartis the rights to commercialise nabiximols in Asia (excluding China and Japan), Africa and the Middle East (excluding Israel).