What Is Rick Simpson Oil?

Rick Simpson Oil (RSO) is a cannabis oil product that reportedly treats several health problems including cancer.

RSO was developed by Canadian medical marijuana activist Rick Simpson. RSO is a cannabis oil product that contains much higher levels of tetrahydrocannabinol (THC) than other cannabis oils. THC is the psychoactive ingredient in marijuana, and it’s the reason you get high from smoking or eating marijuana. Other therapeutic cannabis oils are primarily made from hemp and contain a cannabinoid called cannabidiol (CBD) very little THC (less than 0.3 percent).

Health claims

In addition to being used as a cure for cancer, RSO is said to treat arthritis, asthma, depression, high blood pressure, infections, inflammation, insomnia, and multiple sclerosis. It is also often used to counteract the negative side effects of radiation and chemotherapy.

Rick Simpson Oil

What makes RSO different?

RSO is made from Cannabis indica, a type of cannabis that produces a sedative effect that promotes healing. This is somewhat like the health effect of meditation, which slows down your sympathetic nervous system (fight-or-flight) and activates the parasympathetic nervous system (rest-and-repair).

Side effects and potential risks

THC is a psychoactive substance that can potentially produce side effects including anxiety, depression, disorientation, hallucinations, and paranoia. Physical side effects may include bloodshot eyes, digestive issues, dizziness, impaired memory, impaired motor control and reaction time, low blood pressure, and insomnia.

However, generally these side effects are short-lived and mild.

RSO History

Rick Simpson decided to try cannabis oil as a health remedy after coming across the results of a 1975 study that demonstrated a significant decrease in lung cancer growth in mice treated with THC and another cannabinoid called cannabinol (CBN). Another study showed that using THC and cannabidiol (CBD) extracts increased the effectiveness of radiation against aggressive brain cancer.

However, another study that used human cells discovered that THC increased the growth of certain brain and lung cancer cells. Recently, a 14-year-old girl with a specific type of leukemia was given a cannabinoid resin extract (hemp oil) which appeared to treat her cancer; however, she died two months into the treatment from a gastrointestinal condition unrelated to the cancer, making it difficult to say conclusively whether the cannabis oil treatment was truly effective.

Much more research on humans is needed to determine which cannabinoids are most effective for treating various health concerns. Possibly its biggest risk is that RSO has not been proven to cure cancer; therefore, a patient who forgoes conventional therapy (chemo and radiation) in favor of RSO may run the risk of the cancer growing and then being even more difficult to treat.

Where to get RSO

Rick Simpson advocates making your own RSO. You will need a fair amount of marijuana (which is still illegal in some areas), and you need to be comfortable with the chemical processes used to make RSO. You may also be able to purchase RSO at your local dispensary, providing that marijuana is legal in your state.

Treating cancer

If you want to use RSO to treat cancer, stay with the treatments recommended by your doctor while you use RSO. While the research is promising, it’s wise to stick with what works, and use RSO as a complementary therapy.

If you have experience using Rick Simpson oil to treat cancer, we’d love to hear from you.  Please post your stories about it below.  This topic comes up very often, and we’d love to be able to share the success stories circulating.  Drop a comment, and maybe you can help save a life.

Author: Shane Dwyer
Shane Dwyer is a cannabis advocate who isn't afraid to tell the world about it! You can find his views, rants, and tips published regularly at The 420 Times.


  • Brief story on how RSO cannabis oil cured my cancer.i am 54 years,October 11st 2017,i was diagnosed with cancer of the lungs , which i lost all hope,until a friend introduced me to cannabis treatments which i never believed.But i had to try it and few months after i was totally cured and this cannabis oil killed my cancer, Rick Simpson helped me with this cannabis oil.You can get in touch with him via:rickcurecancerfoundation@gmail.com

    • Shane Dwyer

      That’s an amazing story, and you aren’t the first person to share that with us. So happy for you. We’ll definitely reach out to him – thanks for passing that email along!

  • patrick maina

    Here is my story. greatful

    My wife was diagnosed with a cancer, ( before i learnt of Rick Simpsons oil
    / RSO ) the hospital said to do chemotherapy and radiotherapy.. she did..
    and went through a lot.. but no cure, after a while the doctors said the
    cancer was spreading and we could look for alternatives.. i searched the
    internet and found out about the oil.. asked alot of questions.. watched
    the videos etc.. we made the oil our selves but it couldn’t just work out
    we were doing more harm than good and the cancer was still there spreading,
    i searched more on the internet i found a testimony on how a lady got the
    oil via an email, ricksimpsoncannabisoil96@gmail.com
    immediately copied the email: i wrote to this very email
    ricksimpsoncannabisoil96@gmail.com and in an hour later i
    got a reply back asking me some few questions, and enlightened me on how to
    get the oil in the next 48hours, i placed my order and in the next 48hours
    the medication oil got to us. immediately my wife started using the oil, it
    been two months now, since my wife has been using the medication oil and
    the cancerous problems are gone this very fact was clarified by the doctor.

    i put up this piece of testimony for the sake of those once who need this
    oil to please don’t die in silence their is a cure for your cancer today
    email: ricksimpsoncannabisoil96@gmail.com,,you can text him +19378398879 and get the oil.

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