The most common side-effects from taking Medical Cannabis are dizziness, fatigue, euphoria, amnesia, disorientation, blurred vision, diarrhoea, somnolence and dry mouth.
These reactions are usually mild to moderate and resolve within a few days even if treatment is continued.
The incidence of serious adverse events among patient taking Medical Cannabis has been shown to not be significantly different to that of a matched control group over a 1 year period. Sativex, which is a cannabinoid medication licensed for MS in the UK contains both THC and CBD, and therefore it's
summary of product characteristics serves as a useful reference.