RSO is perhaps most commonly used as an alternative to cancer treatments. But the oil has also been used to treat a variety of other health issues including asthma, multiple sclerosis, fibromyalgia, rheumatoid arthritis anxiety, depression, inflammation and a variety of other conditions. If you’re interested in medical marijuana, you’ll inevitably hear about Rick Simpson Oil or RSO. RSO is a concentrated form of cannabis oil, but where did RSO come from? Come in and ask us, we can tell you!!!