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RSO Oil: Benefits, Uses, Dosage & Where to Buy in 2025

 What is RSO Oil? RSO oil, also known as Rick Simpson Oil, is a potent cannabis extract made famous by Canadian medical marijuana activist Rick Simpson. Unlike other cannabis concentrates that are often consumed for recreational purposes, RSO was specifically created with the intent of delivering strong therapeutic benefits. The oil is a full-extract cannabis oil (FECO) , meaning it contains the full spectrum of cannabinoids, terpenes, and plant compounds extracted from the cannabis plant. Its dark, thick consistency and high THC concentration distinguish it from CBD oils or lighter cannabis tinctures. The History of RSO Oil Rick Simpson developed RSO in the early 2000s after being diagnosed with skin cancer. He claimed that applying the oil topically on cancerous spots led to healing. While medical research has not fully confirmed his claims, his story spread globally, making RSO a household name in the cannabis community. Today, RSO oil remains one of the most widely discus...

RSO Oil: Benefits, Uses, Dosage & Where to Buy in 2025

RSO Oil: Benefits and where to buy RSO Oil



 What is RSO Oil?

RSO oil, also known as Rick Simpson Oil, is a potent cannabis extract made famous by Canadian medical marijuana activist Rick Simpson. Unlike other cannabis concentrates that are often consumed for recreational purposes, RSO was specifically created with the intent of delivering strong therapeutic benefits.

The oil is a full-extract cannabis oil (FECO), meaning it contains the full spectrum of cannabinoids, terpenes, and plant compounds extracted from the cannabis plant. Its dark, thick consistency and high THC concentration distinguish it from CBD oils or lighter cannabis tinctures.

The History of RSO Oil

Rick Simpson developed RSO in the early 2000s after being diagnosed with skin cancer. He claimed that applying the oil topically on cancerous spots led to healing. While medical research has not fully confirmed his claims, his story spread globally, making RSO a household name in the cannabis community.

Today, RSO oil remains one of the most widely discussed cannabis products for its potential medical applications, though it is still considered controversial in traditional medicine.

How RSO Oil is Made

The process of making RSO involves:

  1. Soaking cannabis flower in a solvent (traditionally ethanol or isopropyl alcohol).

  2. Straining and evaporating the solvent, leaving behind a thick, tar-like oil.

  3. Collecting the oil in a syringe or jar for easy dosing.

Because of the solvents involved, making RSO at home can be risky. That’s why it’s recommended to purchase lab-tested RSO from licensed marijuana dispensaries.

RSO Oil vs. Other Cannabis Oils

FeatureRSO OilCBD OilTHC DistillateFull-Spectrum Oil
THC ContentVery High (50–90%)Trace / NoneHigh (Pure THC)Moderate
ConsistencyThick, tar-likeLight oilClear, liquidMedium
PurposeMedical, therapeuticWellness, anxiety reliefRecreational, potencyBalanced wellness
Psychoactive?YesNoYesDepends on THC ratio

RSO is unique because it is not refined or purified to isolate THC or CBD; instead, it contains the full plant matrix, believed to enhance the “entourage effect.”

Potential Benefits of RSO Oil

Research on RSO oil is still limited, but anecdotal evidence and early studies suggest it may help with:

  • Pain management – especially chronic pain and inflammation.

  • Cancer support – some patients use it alongside traditional cancer treatments.

  • Sleep improvement – high THC content helps with insomnia.

  • Appetite stimulation – useful for those undergoing chemotherapy.

  • Neurological conditions – potential support for MS, epilepsy, and Parkinson’s.

⚠️ Important: While many patients report benefits, RSO oil should not be considered a cure for cancer or any disease without proper medical guidance.

Risks and Side Effects

Because RSO oil is extremely high in THC, side effects can include:

  • Drowsiness

  • Dizziness

  • Paranoia or anxiety (at high doses)

  • Impaired coordination

  • Increased heart rate

Patients should always start with a low dose and increase slowly.

How to Use RSO Oil

RSO can be consumed in several ways:

  1. Orally (most common): Place a small amount on your finger or food and swallow.

  2. Sublingually: Place under the tongue for faster absorption.

  3. Topically: Some apply it to skin conditions.

  4. Capsules: Encapsulated doses for measured intake.

🔥 Pro Tip: Because of its potency, RSO is often dispensed in tiny rice-sized amounts.

Dosage Guide for RSO Oil

Rick Simpson originally suggested a 90-day protocol with gradual increases. While this is not medically standardized, it has influenced how many people approach dosing.

  • Beginner: A drop half the size of a grain of rice (approx. 25mg THC).

  • Tolerance phase: Increase slowly every 4–7 days.

  • Full regimen: Some medical users aim for 1 gram per day, but this is extremely potent and only under supervision.

Always consult a medical professional before starting a full RSO regimen.

Is RSO Oil Legal?

The legality of RSO depends on your location:

  • United States: Legal only in states with recreational or medical marijuana programs. Federally, THC extracts remain Schedule I.

  • Canada: Legal under national cannabis laws.

  • Europe: Varies widely; some countries allow medical cannabis only.

Always verify local cannabis regulations before purchasing or traveling with RSO oil.

How to Buy Safe RSO Oil in 2025

With growing demand, many unregulated products claim to be RSO. To ensure safety:

  • Buy from licensed dispensaries or delivery services.

  • Look for lab reports showing THC/CBD content and confirming no residual solvents.

  • Avoid “black market” oils, which may contain dangerous chemicals.

Trusted brands in 2025 are beginning to market RSO-style full extract cannabis oils with higher transparency and testing standards.

Making RSO Oil at Home: Should You?

While Rick Simpson published his method online, making RSO at home involves flammable solvents and is risky. Unless you have experience with cannabis extraction, it’s far safer to purchase lab-tested products.

That said, some people experiment with solventless alternatives like rosin extraction, which may provide similar therapeutic benefits without chemical solvents.

RSO Oil in Medical Cannabis Programs

In states where medical marijuana is legal, RSO oil is often prescribed for:

  • Cancer patients undergoing chemotherapy

  • People with severe chronic pain

  • Epileptic patients not responding to standard treatments

  • Patients with degenerative diseases

Doctors may recommend RSO as a last-resort or complementary therapy.

FAQs About RSO Oil

1. Does RSO oil cure cancer?
No medical body recognizes RSO as a cure. Some patients report benefits, but scientific research is ongoing.

2. How long does it take to feel effects?
Oral effects may take 45–90 minutes, lasting up to 8 hours.

3. Can you cook with RSO oil?
Yes, but it’s usually consumed directly due to its strong taste.

4. Is RSO oil the same as CBD oil?
No. RSO is THC-dominant; CBD oils are non-intoxicating.

5. Can pets take RSO oil?
No. High THC levels are toxic to animals. Stick to pet-formulated CBD products.

External Resources

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Location: Colorado, USA

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