What is Full Spectrum RSO?

What is Full Spectrum RSO?

Full spectrum CBD oil is the preferred choice of many CBD consumers because it contains CBD, a range of cannabinoids, flavonoids, terpenes and THC within legal limits.

Rick Simpson Oil (RSO) is one type of full spectrum CBD oil that some CBD brands produce to provide consumers with a high potency CBD product that may better meet their needs. This particular CBD oil has some unique features like its ultra oil concentration sourced from cannabis indica plants. Being a savvy CBD shopper means understanding exactly what you are buying in CBD products.

Rick Simpson Oil (RSO) is also called full extract cannabis oil (FECA)

TLDR: Rick Simpson Oil (RSO) is also called full extract cannabis oil (FECA). It has a thicker CBD oil that has a high concentration of CBD plus other cannabinoids, flavonoids and terpenes. It is ideal for long-term CBD users who need a higher CBD potency to increase the effects or for people who want to consume less CBD oil.

What is RSO?

Rick Simpson Oil (RSO) is a hemp extract oil that is ultra-concentrated. It is not a brand but rather a way of generically describing a type of CBD oil. The name is due to the fact the CBD oil was developed by Rick Simpson who was searching for treatment for some health issues at the time. Some of the characteristics of RSO oil sold by CBD brands include the following.

  • Raw hemp extract
  • High CBD potency
  • Contains cannabinoids, flavonoids and terpenes from the cannabis plant
  • Thick consistency
  • Usually decarbonylated extracts from strong Indica strains but some RSO is made with hydrocarbon extract
  • Dispensed in an oral syringe

Rick Simpson oil is not the formal name of a particular CBD brand. It refers to a Cannabidiol oil that is made with a whole-plant extract.

The cannabis plant resins and trichomes are separated from the plant to create a highly concentrated product. Without further processing to remove compounds resulting from exposure to high heat during the extraction process, the color is usually a dark brown, green or black because of using the whole plant. Legal RSO still contains less than 0.3 percent THC.

Why Try RSO?

Much more research is needed to document the potential benefits of RSO. One often-quoted research study found that RSO may have a positive impact on decreasing a leukemic blast cell count in a patient. Another study found good reasons to believe that CBD could potentially increase mobility in people with MS. However, these are not medically proven benefits without additional clinical studies.

No medical claims can honestly be made about RSO, but anecdotal information collected through consumer surveys has found people use CBD because it works to improve sleep and other symptoms. A research project found that the phytochemical extracts of the cannabis plant can significantly improve pressure in animals even though there are low levels of THC.

Full-spectrum CBD offers the entourage effect because it contains cannabinoids, flavonoids, terpenes, and THC. This is a term that describes the enhanced effects experienced due to all the compounds in cannabis working together. RSO is a full-plant extract which means you get the full effects of what the cannabis plant has to offer. There is data supporting the synergistic effect of these compounds.

  1. One important reason athletes and seniors may try RSO is because they need the increased CBD amount to address physical issues or to promote healthy sleep. Regular users choose RSO because they may not be experiencing the effects of CBD as much as they once did due to long-term CBD use and want to increase the CBD amount taken in a single dose.
  1. Another reason some people choose high potency RSO oil is that they can take less CBD oil due to its higher potency compared to other CBD products. RSO oil has a much higher concentration of CBD compared to the typical CBD tinctures.

How to Use and Dose RSO?

RSO is usually sold in an oral syringe because of its consistency and to control the dosage. The RSO syringe makes it easy to administer. The oil can be taken like a tincture. The RSO tincture is used by placing a few drops under the tongue and holding the oil there for a short period to allow absorption. RSO oil can also be added to food or drink.

Lazarus Naturals RSO CBD oils

Since RSO oil comes in a syringe, the amount taken each time is easily controlled. It is easy to learn how to take concentrate with a syringe. The oral syringe can deliver the controlled dose, and ml markings on the RSO syringe let you know the desired amount was consumed.

When you buy full spectrum RSO from a transparent CBD brand, the product is legal. Full spectrum RSO is legal because it contains less than 0.3 percent THC, the limit allowed by the U.S. government.

Raw Full Spectrum CBD Extract Product Benefits

1. Lazarus Naturals RSO CBD Oil, 2.5ml

Lazarus Naturals is a leader in the CBD market and has earned a reputation for selling only high-quality products. Some of the features of the 2.5 ml RSO CBD oil are as follows.

  • Full spectrum CBD product made with CBD isolate and hemp extract
  • Each ml contains 400 mg of CBD
  • Each mark on the applicator represents 40 mg of CBD
  • Less than 0.3 percent THC
  • Vegan
  • Gluten free
  • No artificial preservatives, flavors or sweeteners
  • Hemp grown on Lazarus Farms
  • Ethanol extraction method
  • Carrier oil is coconut oil
  • Third-party lab tested
  • Free from pesticides, heavy metals and other toxins

2. Lazarus Naturals RSO CBD Oil, 10ml

Lazarus Naturals is an employee-owned company that takes great pride in its quality products and customer service. A leader in producing state-of-the-art CBD products, the 10 ml RSO CBD oil has the following features.

  • Full spectrum CBD product made with CBD isolate and hemp extract
  • 400 mg of CBD per 1 ml
  • Less than 0.3 percent THC
  • Vegan
  • Gluten-free
  • No artificial preservatives, flavors or sweeteners
  • Hemp grown on Lazarus Farms
  • Ethanol extraction method
  • Carrier oil is coconut oil
  • Third-party lab tested
  • Free from pesticides, heavy metals and other toxins

3. Myriam’s Hope Hemp Enhanced CBD FECO

RSO oil is also known as full extract cannabis oil (FECO). Myriam’s Hemp offers premium hemp oil products that are made in the U.S.A. CBD FECO has the following features.

  • Full spectrum CBD
  • 1 ml serving size
  • 400 mg of CBD per one ml syringe
  • Each serving contains an additional 8 more cannabinoids, flavonoids and terpenes
  • 100 percent hemp oil with no fillers or additives
  • Sourced from organically grown hemp
  • Dark unhealthy compounds created from the use of chemicals and heat during the extraction process are removed
  • Third-party lab tested
  • Free from pesticides, heavy metals and other toxins

4. Endoca Raw Hemp Oil Extract 20%

Endoca raw hemp oil contains phytocannabinoids cannabidiol and cannabidiolic acid 20% (CBDa+CBD 2000 mg) also low concentrations of CBC, CBG, CBN. Compounds like CBDa+CBD, found naturally in the hemp plant, stimulate the body’s own endocannabinoid system, which regulates everything from appetite, mood, and the immune system.

  • Less than 0.2% THC
  • Full spectrum
  • Extra strong CBD concentration
  • Promotes overall well being
  • Suitable for strong doses
  • No preservatives, artificial colors
  • Vegan, gluten free, non-GMO


The color of the final RSO oil product indicates processing quality. Though RSO oil is usually a dark color without further processing after extraction, quality CBD companies have developed proprietary processes to remove harmful compounds that may be created during exposure to high heat. This leaves a beautiful amber color.

RSO oil is for people who want to take a high concentration of CBD per dose while minimizing the amount of oil consumed each day. The oil is sold in oral syringes which makes it easy to control the dose. The RSO syringe is also easy to carry throughout the day, so you have CBD oil available when you need it.


  1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3901602/
  2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5874292/
  3. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7893882/
  4. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7281216/
  5. https://www.frontiersin.org/articles/10.3389/fpls.2018.01969/full


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