Wikipedia
Nabiximols ( USAN, trade name Sativex) is a specific extract of Cannabis that was approved as a botanical drug in the United Kingdom in 2010 as a mouth spray to alleviate neuropathic pain, spasticity, overactive bladder, and other symptoms of multiple sclerosis; it was developed by the UK company GW Pharmaceuticals. The drug is a pharmaceutical product standardised 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).