It is much safer (especially for your lungs) to take pot as a tincture see the Mullaways link below. Sativex is only Big pharma's pretend medication  https://www.facebook.com/mullawaysmc 

 Hi all, IT'S TIME , if you don't won't to suffer for another YEAR then you need to get a letter from your doctor stating your condition , then write to the NSW Premier Mike Baird and Nominate Mullaways Medical Cannabis as your Carer.  Send both letters to Mike Baird , this is ONE country and ONE mob , you can't say it's alright for just ONE , No Emails.  if you have acces to raw product then google bubble hash, buy some ice (real frozen water ice....lmao) and take a look at these strainers available on ebay http://www.ebay.com.au/itm/Hydroponic-5pcs-Bubble-Ice-Hash-Bags-1Gallon-4L-Herbal-Extract-Press-Scre...