RSO is an oil made by washing cannabis buds with a solvent ... That means there's no one "Rick Simpson Oil" for sale. On his website, Simpson explains how to make his namesake oil.

Rick Simpson Oil (RSO) is a highly concentrated cannabis extract. It’s known more as a medical marijuana product due to its incredibly high levels of THC. While it is possible to make both THC ...

Rick Simpson Oil (RSO) is a cannabis extract that takes its name from the medical cannabis activist who created it. Simpson claims that applying the oil to cancer spots on his skin cleared them ...

It may also cause paranoia, anxiety, and impaired memory. Rick Simpson oil (RSO) is a cannabis oil product. It was developed by Rick Simpson, a Canadian medical marijuana activist. RSO differs ...