Is RSO Legal in California?

What is RSO?

Rick Simpson Oil (RSO) is a powerful cannabis extract packed with high levels of THC and other naturally occurring compounds. It was first developed by Rick Simpson, a Canadian who shared his personal success using the oil in his battle with cancer, and inspired others to explore its benefits.

Unlike some concentrates, RSO is a full-spectrum extract, meaning it keeps all the cannabinoids and terpenes found in the cannabis plant so that you can get the full range of its therapeutic effects.

With its high THC concentration, it’s become mainly used for medical applications, mostly cancer treatment and symptom management.

Is RSO Legal in California?

Absolutely. RSO is legal in California under both the state’s recreational and medical cannabis laws. Adults 21 and up can purchase it freely from dispensaries, while medical patients with a doctor’s recommendation can often buy more and pay less in taxes. 

Given that California has one of the country’s most established cannabis markets, you have plenty of options for RSO, such as syringes, tinctures, capsules, and edibles. You can also place an order directly with us at RickSimpsonOil.com for discreet delivery and guaranteed lab-tested quality.

Will RSO Show Up on a Drug Test?

Yes, it will. Because RSO is high in THC, it’s treated the same as any other cannabis product in standard drug tests. 

Even though cannabis is legal in California, employers and organizations can still enforce their own drug-free rules. 

That means using RSO could result in a positive THC test, so it’s good to keep that in mind before you use it.

Where to Buy Legal RSO Products in California

When it comes to buying RSO in California, you have a wide range of options:

• Online at RickSimpsonOil.com: We are the official RSO site, making us the most reliable source for authentic Rick Simpson Oil. You can trust the quality because we back every product we sell with third-party lab testing for potency and purity. Whether you live in California or any other state, you can expect quick, discreet delivery service right to your door.
• Licensed Dispensaries: Because cannabis is fully legal in California, you’ll find RSO in most dispensaries statewide, from Los Angeles to San Francisco, in multiple forms, including syringes, capsules, tinctures, and edibles. Many also offer online menus with options for pickup or local delivery.
• Medical Cannabis Programs: Patients with qualifying medical conditions can access RSO through California’s medical marijuana program, often with added perks like higher limits or lower taxes.
• Delivery Services & Local Retailers: Many California cannabis delivery providers carry RSO products, so you can get them conveniently and securely without leaving home. However, always check lab results before buying to confirm authenticity.

Wondering about the legality of RSO in other states? See our full RSO legality guide and pages for Texas, Michigan, Colorado, and Florida.