Delta 8 and delta 10 are variants of THC, the compound in cannabis that gets you high. Both are found naturally in the plant only in trace amounts, so the products you see on shelves are manufactured from hemp-derived CBD through a chemical conversion process. They produce milder psychoactive effects than conventional (delta 9) THC, and they exist in a legal gray area that varies by state.
How They Differ From Regular THC
All three forms of THC share the same basic molecular skeleton: a chain of carbon atoms with a double bond at a specific position. That position is the only structural difference. Delta 9 THC, the one most people mean when they say “THC,” has its double bond on the ninth carbon. Delta 8 has it on the eighth carbon. Delta 10 has it on the tenth.
This tiny shift changes how each molecule fits into your brain’s cannabinoid receptors. Delta 8 binds to those receptors less tightly than delta 9, producing a high estimated at roughly two-thirds the strength of regular THC. Delta 10 binds even more weakly, making it the mildest of the three. The type of high reportedly differs too: delta 8 users tend to describe feeling sleepy and relaxed, while delta 10 users describe a more energizing, euphoric effect. These distinctions are based on user reports rather than clinical studies, so individual experiences vary.
How Delta 8 and Delta 10 Are Made
Neither delta 8 nor delta 10 occurs in large enough quantities in the cannabis plant to extract directly. Instead, manufacturers start with CBD oil from industrial hemp and use acid-catalyzed chemical reactions to rearrange the molecule’s structure into delta 8 or delta 10 THC. This is called isomerization: same atoms, different arrangement.
The process involves dissolving CBD in a solvent and adding an acid catalyst to trigger the conversion. Different acids push the reaction toward different end products, and the choice of catalyst, temperature, and reaction time determines whether you get mostly delta 8, delta 9, or delta 10. The chemistry is well understood, but in practice, unregulated producers often cut corners.
A study published in the journal Molecules analyzed delta 8 products on the market and found a threefold quality problem: impure CBD starting material, poor cleanup after the chemical reaction, and inadequate testing before products reach consumers. Researchers identified unknown impurities in several products, including compounds containing chemical groups not found in any published synthesis method, meaning their origin and safety profile are simply unknown. Some impurities appeared to be leftover byproducts from the conversion reaction itself.
What the Effects Feel Like
Delta 8 is the more popular of the two and has the larger body of user experience behind it. Most people describe it as a toned-down version of a regular cannabis high: noticeable relaxation, mild euphoria, and a body-heavy feeling that leans sedating. It’s often compared to an indica strain experience. For people who find delta 9 THC too intense or anxiety-inducing, delta 8’s lower potency can feel more manageable.
Delta 10 sits at the other end of the spectrum. Users report a lighter, more clear-headed buzz with an energizing quality, closer to what people associate with sativa strains. The euphoria is present but less heavy, and the sedation is minimal. Because delta 10 is weaker than delta 8, some users find its effects too subtle, while others prefer it for daytime use.
Neither compound has been studied in rigorous clinical trials for its subjective effects. The potency estimates and experience descriptions come from small early studies and a large volume of anecdotal reports. What is established is the basic pharmacology: both bind to the same receptor as delta 9 THC, just less effectively, which is why the high is milder.
Common Product Types
Delta 8 and delta 10 are sold as distillates (concentrated oils), gummies and other edibles, vape cartridges, tinctures, and “infused” hemp flower, where the cannabinoid is sprayed onto smokable plant material. Gummies and vape cartridges dominate the market. Because these products are synthesized rather than simply extracted, the final form is always a concentrate that gets added to a delivery vehicle.
Legal Status
The 2018 Farm Bill defines hemp as any part of the cannabis plant containing no more than 0.3% delta 9 THC on a dry-weight basis. Because the law specifies delta 9, products containing delta 8 or delta 10 can technically fall under the legal definition of hemp, even if they’re strongly psychoactive. The law also explicitly includes derivatives and isomers of hemp-derived substances, which manufacturers argue covers these converted cannabinoids.
This federal loophole is the entire reason the delta 8 and delta 10 market exists. However, many states have moved to close it. More than 20 states have restricted or banned delta 8 specifically, and some of those bans extend to delta 10 and other hemp-derived cannabinoids. The legal landscape changes frequently, so the legality of these products depends entirely on where you live.
Drug Testing Concerns
Standard urine drug tests cannot tell the difference between delta 8, delta 10, and delta 9 THC. A 2023 study tested six commercially available drug screening kits and found that all of them cross-reacted with delta 8, delta 10, and their metabolites (the breakdown products your body creates after consuming them). In practical terms, if you use delta 8 or delta 10, you will likely test positive on a workplace or clinical drug screen, and a positive result will be indistinguishable from regular marijuana use.
Even confirmatory testing, which labs use to verify a positive screening result, may not reliably separate the metabolites of these different THC forms. If you face any kind of drug testing, delta 8 and delta 10 carry the same risk as conventional cannabis.
Safety Considerations
The core safety concern with delta 8 and delta 10 is not the cannabinoids themselves but the manufacturing process. Because most of these products are produced outside of regulated cannabis markets, there is no standard requirement for testing residual solvents, leftover acid catalysts, or unknown reaction byproducts. The impurity analysis from the Molecules study found compounds in commercial products that researchers could not fully identify, raising questions about what consumers are actually inhaling or ingesting.
Products sold in states with regulated cannabis programs and mandatory third-party testing are more likely to be clean, but the majority of delta 8 and delta 10 products are sold in states without such oversight, often in gas stations, smoke shops, and online. A certificate of analysis from the manufacturer is better than nothing, but the quality of independent testing varies enormously. If you choose to use these products, buying from vendors who publish full-panel lab results (covering potency, residual solvents, heavy metals, and pesticides) reduces your risk compared to unverified products.