Can Rick Simpson Oil (RSO) Treat Cancer?
- Chad Maree
- 6 days ago
- 2 min read
Rick Simpson Oil, often called RSO, is a cannabis oil that many people talk about when discussing alternative cancer treatments
What Is Rick Simpson Oil?
Rick Simpson Oil is a thick, dark cannabis oil created by Rick Simpson, a Canadian who believed cannabis helped heal his skin cancer.

RSO is different from many other cannabis oils because:
It contains very high levels of THC
THC is the chemical in cannabis that causes a “high”
Many medical cannabis oils focus on CBD, not THC
Rick Simpson does not sell RSO. He encourages people to make it themselves.
What Are the Main Claims About RSO?
Supporters of RSO believe it may help treat:
Cancer
Arthritis
Multiple sclerosis (MS)
Asthma
Inflammation
High blood pressure
Depression
Insomnia
Rick Simpson claims RSO is made from a type of cannabis called Cannabis indica, which may help the body relax and heal.
What Does the Research Say?
Early and Animal Studies
A 1975 study on mice found that THC slowed lung cancer growth
Later studies on animals and cells showed mixed results
Some research suggests cannabis may help cancer cells respond better to radiation
Human Studies
Small studies show cannabinoids are generally safe for cancer patients
But they do not prove that cannabis can cure or control cancer
There are no large, long-term human studies proving RSO works as a cancer treatment
Possible Side Effects of RSO
Because RSO is very high in THC, it can cause mental and physical side effects.
Mental Side Effects
Anxiety
Paranoia
Confusion
Hallucinations
Mood changes
Memory problems
Physical Side Effects
Dizziness
Low blood pressure
Red eyes
Poor coordination
Slow reaction time
Sleep problems
Most side effects are short-term, but they can be uncomfortable or frightening, especially for first-time users.
If you’re curious about RSO oil or capsules as part of your personal wellness journey, you can explore our carefully sourced products on our website.
The information in this article is provided for educational and informational purposes only. It is not intended as medical advice, diagnosis, or treatment.





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