RSO gets its name from Rick Simpson, the Canadian cannabis advocate who popularized this style of full-spectrum extract in the mid-2000s. It’s thick, dark, and made from the whole plant rather than an isolated compound, which is why people who want a more concentrated option tend to gravitate toward it over standard edibles or vape carts.
The tricky part is that every RSO brand takes a seemingly unique approach with their products. Some stick to one generic high-THC formula, while others offer ratio options, strain-specific batches, or entirely different formats like capsules and tinctures. In this guide, we’re covering seven RSO brands to consider in 2026, plus what what to think about when choosing one.
Quick Comparison
| Brand | Product Format | Potency | Ingredients | Best For |
| RickSimpsonOil.com | Syringes (1g to 30g), capsules, gummies, tinctures, topicals, suppositories | High-THC, full-spectrum, varies by product | Full-spectrum extract from high-THC cannabis strains | Comparing formats before deciding how to take RSO |
| Emerald Bay Extracts | Syringes, tablets, tinctures | Full-spectrum, strain-specific | Strain-specific cannabis extract | Choosing RSO by strain or cannabinoid profile |
| Dr. Solomon’s | Syringes | THC-rich, CBD-rich, or 1:1 CBD:THC | Flash-frozen flower, sub-zero ethanol extraction | Choosing RSO by cannabinoid ratio |
| Nature’s Heritage | Syringes, capsules | Up to around 76% THC, 1:1 CBD:THC also available | Crude cannabis oil, cannabis-derived terpenes, sunflower lecithin | Massachusetts patients who want a precise capsule dose |
| Treeworks | Tinctures | Full-spectrum, blended with CBN, CBG, or THCV | RSO extract blended with functional cannabinoids | RSO tailored to a specific time of day or purpose |
| RISE | Tincture | 200mg RSO per bottle | Full-spectrum RSO blended with refined hemp seed oil | Michigan patients who want a straightforward tincture |
| Texas Original | Oral syringe, gummies, tincture, chocolate bites | Varies by product, 20mg THC per gummy | RSO extracted from company-grown strains | Registered Texas medical cannabis patients |
RickSimpsonOil.com
Best For: Wide variety of RSO consumption formats
If you’re not sure yet how you want to take RSO, RickSimpsonOil.com gives you more ways to try it than most brands. Their syringes come in six sizes from 1g up to 30g, so you can start small before committing to a larger supply. If a syringe isn’t the right fit for you, they also offer RSO in capsules, gummies, tinctures, topicals, and suppositories.
Every product comes with third-party lab results you can review before you order, and you don’t need a medical card to buy. Having this many formats in one place means you can compare oral, sublingual, and pre-measured options without piecing together orders from several different brands.
Emerald Bay Extracts
Best For: Choosing RSO by your favorite strain
If you already know which strains work well for you, Emerald Bay Extracts lets you carry that preference over to RSO. Instead of one generic oil, their syringes come in strains like Super Lemon Haze, OG Kush, Gelato 41, Cannatonic, and White CBG, so you can choose based on the cannabinoid and terpene profile you’re looking for.
Their syringes use medical-grade hardware with clear markings, too, which makes it easier for you to measure out consistent portions of such a concentrated oil.
Dr. Solomon’s
Best For: Lower-THC and balanced CBD:THC options
If a heavy, THC-only extract isn’t what you want, Dr. Solomon’s gives you four options to choose from: a sativa-leaning oil, an indica-leaning oil, a 1:1 CBD to THC blend, and a CBD-rich version. That range gives you a more moderate starting point if you’re newer to RSO or sensitive to high doses of THC.
They make their oil from premium flower rather than trim, flash-freezing it and extracting it in sub-zero ethanol before filtering and decarboxylating it. The company was founded in 2016 by sisters Laura and Rebecca and named after their mother, a physician and scientist.
Nature’s Heritage
Best For: Pre-measured RSO doses in Massachusetts
If you shop at Massachusetts dispensaries and want to skip measuring a syringe yourself, Nature’s Heritage capsules give you a fixed 25mg THC dose every time, sold in 40-packs. That consistency makes it much easier to find and repeat the amount that works for you.
They also offer RSO syringes, including an indica-dominant oil testing near 76% THC and a 1:1 CBD:THC option if you want a more balanced experience. The ingredient list is short and simple: crude cannabis oil, cannabis-derived terpenes, and sunflower lecithin.
Treeworks
Best For: Daytime or nighttime RSO use
Treeworks blends real RSO with other cannabinoids so you can choose a tincture based on when and why you’re using it. Their CBN formula is designed for nighttime use, while their CBG and THCV formulas are better suited to your daytime routine.
If you want the full-spectrum effects RSO is known for but in a formula matched to your specific goals, their tinctures give you more control than a single high-THC oil.
RISE
Best For: Easy-to-dose RSO tincture in Michigan
If you’re shopping in Michigan and already comfortable with tinctures, RISE gives you an easy way to try RSO without handling a syringe. Their tincture contains 200mg of RSO per bottle, blended with refined hemp seed oil so you can measure your dose by the dropper.
You’ll find it on dispensary menus across Michigan, so it’s a convenient option if you’d rather buy locally than order from out of state.
Texas Original
Best For: Texas medical cannabis patients
If you’re a registered patient in the Texas Compassionate Use Program, Texas Original gives you one of the widest ranges of RSO formats available to you in the state. They were the first licensed provider to offer an RSO-based product through the program, and you can now choose between an oral syringe, a tincture, limited-run chocolate bites, and a THC-only Pineapple Gummy with 20mg per piece.
Every product is extracted from strains they grow themselves, like Texas OG and Blue Dream. Because they operate within the Texas medical program, you’ll need to pick up your order at one of their locations rather than have it shipped.
What to Look for in an RSO Brand
Because RSO is such a unique extract, you’ll want to do some due diligence before choosing a product. Here’s what to think about:
Lab Testing
Before you buy, make sure you can see third-party lab results for the exact product you’re ordering, not just a general claim that the brand tests their products. A full lab report shows you the cannabinoid content and confirms the oil was screened for contaminants like pesticides, residual solvents, and heavy metals. Because RSO is so concentrated, any contaminants in the source material end up concentrated too, so this step matters even more than it does when you’re buying flower.
Potency
RSO potency can vary a lot between brands and even between batches from the same brand, so check the actual THC percentage or milligram count before you buy instead of assuming every RSO product is equally strong. If you’re newer to RSO, starting with a lower-THC or CBD-balanced option gives you more room to find the dose that works for you before moving up to a high-THC syringe.
Ingredients
Traditional RSO should have a short, clear ingredient list: the cannabis extract itself, plus a small number of additions like sunflower lecithin in capsules or a carrier oil in tinctures. If you see a long or vague ingredient list, ask the brand whether you’re getting genuine full-spectrum RSO or a product reformulated from distillate, since distillate won’t give you the same range of cannabinoids and terpenes.
Product Quality
The type of plant material, how the cannabis was grown, and the extraction method all affect how consistent and flavorful your RSO will be. Brands that tell you which strain they used, whether they started with whole flower or trim, and how they extracted the oil give you a much clearer picture of what you’re buying than brands that simply label everything “RSO.”
The Bottom Line
Choosing an RSO product isn’t just about finding the highest THC percentage. Check for current third-party lab results, clear potency information, and a format that makes it easier to control your dose. Because RSO can be highly concentrated, starting with a small amount and giving it time to take effect can help you avoid taking more than intended.
From there, consider what matters most to you, such as strain or cannabinoid variety, a specific product format, or availability in your state. The right option depends on how you plan to use RSO, your experience with THC, and what product information the manufacturer makes available.
Frequently Asked Questions
Here are quick answers to a few questions people ask most often when comparing RSO brands.
Is RSO stronger than a regular THC tincture or edible?
Usually, yes. RSO is a highly concentrated, full-spectrum extract that often contains more THC than standard tinctures or edibles, though potency still depends on the specific product and its lab results.
Do I need a medical card to buy RSO?
It depends on the brand and your state. Some, like RickSimpsonOil.com, ship without a medical card, while others, like Texas Original, are only available to registered medical patients through a state program.
What’s the difference between RSO and distillate?
RSO is a full-spectrum extract that retains most of the plant’s cannabinoids, terpenes, and other compounds, while distillate isolates THC and strips most of that out. That difference is part of why RSO tends to have a stronger, more whole-plant effect.
How do I know if an RSO product is genuine?
Check for a specific extraction method, a named source strain or flower type, and third-party lab results for the exact product you’re buying. A vague label with no testing or sourcing information is a reason to look elsewhere.
