What is Rick Simpson Oil (RSO)? The Complete Guide

Rick Simpson Oil (RSO) is a highly concentrated, full-spectrum cannabis extract that has become one of the most sought-after products for people looking for potent, whole-plant support. Named after Canadian activist Rick Simpson, RSO typically contains 60-90% THC and preserves the complete profile of cannabinoids, terpenes, and flavonoids found in the cannabis plant.

This complete guide covers what RSO is, how it is made, how it differs from other extracts, and how to use it safely. Whether you are considering RSO for the first time or want to deepen your understanding, this is the most comprehensive resource available.

The origins of Rick Simpson Oil

In 2003, Rick Simpson, a Canadian engineer, developed this concentrated cannabis oil after reading research on the therapeutic potential of cannabinoids. He created the extract to treat his own skin condition and, after seeing results, began sharing his extraction method freely with others.

Simpson's advocacy brought global attention to full-spectrum cannabis extracts, and the term RSO became synonymous with high-potency, whole-plant cannabis oil. Today RSO is produced by licensed extractors who follow refined, safety-focused versions of the original method.

How RSO is made

RSO is produced through solvent extraction. High-THC cannabis flower is soaked in a food-grade solvent such as ethanol to strip cannabinoids and terpenes from the plant material. The solvent is then carefully evaporated, leaving behind a thick, dark, resinous oil.

The result is a full-spectrum concentrate that captures the entourage effect - the theory that cannabis compounds work better together than in isolation. Reputable producers lab-test every batch for potency, residual solvents, pesticides, and heavy metals.

Key benefits of RSO

• Exceptionally high potency (typically 60-90% THC)
• Full-spectrum profile with the complete entourage effect
• Versatile - can be taken orally, sublingually, or added to food
• Made from the whole plant, preserving minor cannabinoids and terpenes
• Long shelf life when stored properly

How to use RSO safely

Because RSO is extremely potent, the golden rule is to start low and go slow. Begin with a dose about the size of a grain of rice (roughly 25mg) and wait one to two hours before considering more. Most protocols increase the dose gradually over several weeks.

Always consult a healthcare professional before starting RSO, especially if you take other medications or have existing health conditions. RSO can cause strong psychoactive effects at higher doses.

Final thoughts

RSO remains one of the most respected full-spectrum cannabis extracts available. When sourced from a lab-tested, transparent producer and used responsibly, it offers a potent, whole-plant option for those seeking maximum benefit from the cannabis plant.