
What is RSO?
What is RSO?
Rick Simpson Oil (RSO) is a process of cannabis extraction developed by Canadian engineer Rick Simpson in the early 2000s to treat his cancer. During this time, he began experimenting with cannabis oil extraction techniques and gained widespread attention after sharing his story and promoting the use of RSO as a treatment for various medical conditions.
How is RSO Made?
RSO typically follows a simple extraction process that involves soaking the plant material in a solvent. It is frequently manufactured using isopropyl alcohol, naphtha, or a similar petroleum-based solvent during extraction.

Is RSO Still Used as Medicine?
The RSO method of extraction presents high yields of cannabis oil. However, this process can leave behind harmful residue and should not be used for critically ill patients. As the understanding of cannabis extraction techniques has advanced, producers have begun utilizing new methods that aim to create extracts with a broader spectrum of cannabinoids and terpenes. This has led to the adoption of the term full-extract cannabis oil (FECO) to differentiate these extracts.
Is RSO Lab-Tested?
Most RSO on the market is not typically lab-tested for safety or potency by a reliable third party. Cannabis oil makers need to provide this report to ensure confidence and dosing accuracy for patients. Be wary if cannabis companies do not have these reports available for consumers. All medicines, even homemade medicines, should be lab-tested for potency and purity. King Harvest is committed to testing and sharing third-party lab tests to prove the purity and quality of its cannabis oils.
Where can I buy RSO?
Quality, lab-tested, dependable RSO can be difficult to source. The experts at King Harvest have abandoned the RSO extraction method and have fully committed to providing patients with the superior healing power of FECO. Kingharvest.org has a curated collection of FECO cannabis products that are meticulously crafted to cater to diverse medical needs. Whether patients seek pain relief, relaxation, or treatment for a serious diagnosis, King Harvest has something transformative for everyone.
Is FECO Better than RSO?
Yes, FECO is considered higher quality and more effective than typical RSO. The term FECO has been developed to describe cannabis oils that are made from various full-spectrum extraction methods. FECO preserves the full range of beneficial compounds found in the cannabis plant in a safe, potent oil. RSO is descriptive of a toxic extraction process that rarely considers the quality of the original material from which the oil is derived. As a result, RSO is less potent than FECO and should not be used by critically ill patients who need to see positive results.
Why is RSO Inferior to FECO?
RSO uses inferior ingredients such as entire cannabis plants and unsafe extraction methods to maximize profits. The chemical residue from RSO extractions is counterproductive for patients with compromised immune systems.
King Harvest believes that “quality in” equates to “quality out.” Medical-grade cannabis oil should be made with ever-increasing improvements and testing. King Harvest FECO is made exclusively with 100% organic, California-grown sourced cannabis buds using safe extraction methods without the harsh chemicals. The result is a safe, potent, lab-tested product containing a full spectrum of cannabinoids and terpenes ideal for critically ill patients.
Why Use FECO?
Simply put, lab-tested FECO is the single most economical and powerful medicine you can choose. Because it is raw, unrefined, and incredibly potent, it is the basis from which other cannabis medicines are extracted. In addition, there are no meaningful side effects of FECO, making it superior in nearly every way. King Harvest FECO can outperform other medical cannabis medicines. FECO has also been shown to outperform most pharmaceutical remedies.
Is RSO good for Dogs?
For over ten years our professional team has seen first-hand success of RSO for dogs. Although this success is “anecdotal,” our group of King Harvest Wellness dosing specialists works directly with veterinarians, doctors, shelters, and hospitals who have often referred patients directly to our team.
FECO and RSO have been a huge benefit to our furry friends. Cannabis had always been a traditional part of the doctor’s medicine kit up until about 100 years ago. We do not claim that cannabis oils should be used “instead of” Western medicines. Rather, we believe that cannabis should work in harmony with veterinary medicine. When used in combination with traditional Western therapies, patients get the best of both worlds.
Reputable Source for FECO
King Harvest Wellness has been operating in the medical cannabis space for the better part of 12 years and has assisted more than 50,000 patients with serious, critical illness situations. You will find that making medicine responsibly and safely under the criteria of cancer survival is a very specialized and serious thing.
Are you ready to explore natural treatments and experience the medicinal benefits of RSO and FECO? Get in touch with our expert dosing specialists to see how FECO could help you lead a happier and healthier life.
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