A Study of the Long-term Safety of Sativex Use

Subjects who had previously participated in a placebo controlled GW clinical study were screened and if eligible began dosing with GW-1000-02. Subjects were reviewed for tolerability and evidence of clinical benefit at weeks two and four and then every eight weeks. Subjects self-titrated to symptom resolution or maximum tolerated/allowable dose of 130 mg THC and 120 mg CBD.

Inclusion criteria

• Willing and able to give informed consent.
• Male or female aged 18 years or above.
• Diagnosed with a condition categorised as one of the following: multiple sclerosis, spinal cord conditions, peripheral nerve injury or central nervous system damage associated with vascular, traumatic, infective, genetic or metabolic disease and whose symptom(s) were not wholly relieved by currently available therapy, prior to the previous study of GW-1000-02 or placebo.
• Had participated in a GW clinical study using GW-1000-02 within the previous month.
• Had shown tolerability to the study medication during the previous GW study.
• Was expected, by the investigator, to gain clinical benefit from receiving long-term GW-1000-02.
• Were willing, if female and of child bearing potential or male subjects with a partner of child bearing potential, to ensure that effective contraception was used during the study and for three months thereafter.
• Had not used cannabinoids (cannabis, Marinol or Nabilone) for at least seven days before Visit 1 (the exception being GW-1000-02 given as study medication) and were willing to abstain from any use of cannabis during the study.
• Recent (within seven days) haematology and blood chemistry that was normal or considered clinically acceptable in view of the subjects underlying condition.
• Able (in the investigators opinion) and willing to comply with all study requirements.
• Willing for the Home Office to be notified of his or her participation in the study.
• Willing to allow his or her general practitioner and consultant, if appropriate, to be notified of participation in the study.

Exclusion criteria

• History of serious psychiatric illness, including schizophrenia, other psychotic illness or severe personality disorder other than depression associated with the underlying condition.
• Known or strongly suspected of alcohol or substance abuse or considered by the investigator to have been at risk of alcohol or substance abuse.
• Severe cardiovascular disorder, such as ischaemic heart disease, arrhythmias (other than well controlled atrial fibrillation), poorly controlled hypertension or severe heart failure.
• History of epilepsy or convulsions.
• Significant renal or hepatic impairment.
• Terminally ill.
• Any other significant disease or disorder which, in the opinion of the investigator, may have either put the subject at risk because of participation in the study, or may have influenced the result of the study, or the subject's ability to participate in the study.
• Female subjects who were pregnant, lactating or planning pregnancy during the course of the study.
• Regular levodopa (Sinemet, Sinemet Plus, Levodopa, L-dopa, Madopar, Benserazide) therapy within seven days of study entry.
• Known or suspected hypersensitivity to cannabinoids or any of the excipients of the study medication.
• Known or suspected adverse reaction to cannabinoids.
• Donation of blood during the study.
• Previous participation in this study.