
FECO & RSO
Full Extract Cannabis Oil (FECO) is the premiere plant-based cannabis medicine to treat life-threatening diseases and chronic conditions. FECO from a trusted source ensures transparency, safety, and treatment success. King Harvest is dedicated to providing potent, lab-tested organic FECO safely extracted from California-sourced flower-only cannabis. With every purchase of King Harvest FECO, patients are assigned a personalized dosing specialist to track their progress and receive custom protocols to achieve their wellness goals.

All About FECO
FECO (Full-Extract Cannabis Oil) is one of the most effective forms of cannabis that you can use for your health and wellness, particularly if you are facing serious medical challenges. Learn everything you need to know below:
RSO (Rick Simpson Oil)
Looking for RSO? King Harvest offers superior full-extract cannabis oil (FECO) using a cleaner extraction process to preserve the broadest spectrum of cannabinoids and terpenes without the potentially toxic distillates associated with RSO.
THC Demystified: Understanding the Science Behind Sativa, Indica & Hybrids
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Frequently Asked Questions about FECO
FECO is a highly concentrated, whole-plant extract. It provides the broadest spectrums of cannabinoids and terpenes available. Cannabinoids and terpenes are the components responsible for the medicinal benefits of cannabis. Due to its potency, many consider FECO to be one of the most versatile medical cannabis treatment options as it offers the largest range of cannabinoids and terpenes to boost each other’s effects based on the entourage effect. View the various types of Full Extract Cannabis Oil products we offer for sale below.
FECO is one of the best products for those seeking help from cannabis. It is a broad-spectrum concentrate that has been shown to assist people in a variety of chronic ailments. In most cases, all you need is a rice-grain-sized dose to last for most of the day.
Named after Rick Simpson, RSO Oil is the homemade recipe he posted online after claiming the oil successfully treated his skin cancer. Rick was diagnosed with basal cell carcinoma back in the early 2000s. FECO is often mistaken for RSO but is very different. The difference between FECO & RSO is the method used for extraction. FECO specifically is extracted using the Ethanol Extraction method with the use of grain alcohol, which is safer than RSO method which uses isopropyl alcohol.
When comparing FECO vs RSO, RSO’s extraction is considered dangerous because of the potential risk to ingest the solvent. The solvent can be converted to acetone in the liver and therefore be incredibly toxic. High grade equipment is needed when making both FECO and RSO. We offer a vast selection of premium quality FECO tincture products.
Full Extract Cannabis Oil (FECO) and Rick Simpson Oil (RSO) are both medical-grade cannabis oil extracts and have been suggested to patients and clinicians for those experiencing symptoms affiliated with cancer and cancer treatments, like radiation. FECO and RSO are both considered to be extremely beneficial for severe illnesses, such as cancer, fibromyalgia, anxiety, PTSD, epilepsy, and other conditions.
FECO specifically is extracted using the Ethanol Extraction method which is safer than the RSO method which uses Isopropyl alcohol. The cannabis flower is soaked in ethanol to extract the THC. After extraction, it is put through a refinement process that purifies the product. The ethanol removes unwanted compounds offering the purest and best-tasting concentrations available.
It’s been noted that cannabis extract provides immense relief through “The Entourage Effect.” This synergistic combination of cannabinoids, terpene profiles, cannabidiol (CBD), and THC provide. Provides powerful pain-fighting capabilities. When combined it also reduces inflammation, which is widely believed to be the root of most diseases. CBD also has a major role in reducing inflammation through the activation of the endocannabinoid system. By binding with CB1 and CB2 receptors throughout the nervous and endocrine system, the body can “self-heal” and reduce chronic inflammation.
Depending on your preferred method for delivery, you can choose the tincture (sublingual) or suppository dose of Full Extract Cannabis Oil. To understand the difference between the two, let’s take a look at some key traits for each one:
Tincture (Sublingual) — The term ‘sublingual’ means “under the tongue.” This type of FECO is best administered under the tongue. It is best to place the oil under your tongue and allow it to seep into the veins there for immediate distribution through the bloodstream. While it is safe to swallow, doing so will result in a delay of the beneficial effects.
Suppository — A suppository is a capsule that you insert through the rectum, they also offer fast delivery directly to the bloodstream. This method allows for a very high absorption rate, as much as 70% of the compounds will be utilized.
It depends on the benefits you are seeking to get from the Full Extract Cannabis Oil. FECO Suppositories will not give you the feeling of being high, but you will still receive the benefits of the other cannabinoids and terpenes contained in them. Additionally, each person responds to each delivery method differently. So, you may need to try various means in order to find the right products for you. Have questions on which method is the best for you? Book a consultation with our FECO Specialists.
Yes, FECO (Full Extract Cannabis Oil) can be consumed by smoking, but it’s important to note that smoking FECO oil is not the most common or recommended method of consumption. FECO oil is highly potent and concentrated, and smoking it directly can be quite intense and potentially harsh on the throat and lungs due to its high cannabinoid content.
Typically, FECO oil is used for oral consumption, sublingual administration, or as an ingredient in edibles, tinctures, or topical applications. These methods allow for better dosage control and are generally considered safer and more effective for utilizing the medicinal properties of FECO oil.
If you are considering smoking FECO oil, it’s crucial to exercise caution and start with very small amounts to gauge your tolerance. Always ensure you have obtained the oil from a reputable source and follow the guidance of a medical professional or experienced cannabis practitioner.
If you’re looking for alternative methods of consuming FECO oil, consider options such as vaporization, oral ingestion, or sublingual administration.
Cannabis oil can be used in various ways, depending on your preferences and your specific product. Here are some standard methods of using cannabis oil:
- Oral ingestion: Cannabis oil can be consumed orally by swallowing it directly or adding it to food or beverages. Mix it into a smoothie, yogurt, or salad dressing, or place it under your tongue for sublingual absorption. When ingested orally, it takes time for the effects to kick in (typically around 30 minutes to 2 hours), but the results may last longer.
- Sublingual administration involves placing a few drops of cannabis oil under your tongue and holding it there for a minute or two before swallowing. This method allows for faster absorption of the cannabinoids into the bloodstream through the thin tissues under the tongue, resulting in quicker onset than oral ingestion.
- Vaporization: Cannabis oil can be used in vaporizers designed for oil concentrates. These devices heat the oil to a temperature where it vaporizes but doesn’t burn, allowing you to inhale the vapor. Vaporization is considered a healthier alternative to smoking as it eliminates the combustion of plant material. It provides fast-acting effects as the cannabinoids are absorbed directly into the bloodstream through the lungs.
- Topical application: Cannabis oil can be applied topically to the skin as a topical cream, balm, or oil. This method is commonly used for localized relief, such as muscle or joint pain. However, please note that cannabis oil applied topically generally does not produce psychoactive effects as the cannabinoids do not enter the bloodstream.
It’s essential to start with a low dosage and gradually increase it to find the right balance for your desired effects. Additionally, it’s advisable to consult with a healthcare professional or a knowledgeable cannabis practitioner to discuss your specific needs and obtain personalized guidance on dosage and usage.