How Cannabis Products Are Made: From Plant to Concentrate to Edible
Product Types
25%
THC content has roughly tripled since 1995 and concentrates now exceed 90%, making how each cannabis product is manufactured a direct predictor of its risk profile.
Biological Psychiatry, 1995
Biological Psychiatry, 1995
View as imageCannabis comes in far more forms than it did a generation ago. Flower is still the most recognized, but concentrates, edibles, tinctures, topicals, and vape cartridges now make up a growing share of the market. If you have ever wondered how cannabis products are made, from concentrates and edibles to everything in between, understanding the manufacturing and extraction processes behind each product type helps explain why they affect your body so differently. The potency of what you consume is not random. It is a direct result of how the product was created.
Key Takeaways
- Cannabis products range from flower at 15 to 25% THC to concentrates above 90% THC — and understanding how cannabis products are made explains why concentrates and edibles hit your brain so differently
- Solvent-based methods like butane hash oil and CO2 extraction strip away plant material to isolate THC, which is why concentrates deliver a far more intense signal to your brain than flower
- Edibles go through your liver first, where THC gets converted into 11-hydroxy-THC — a form that crosses into your brain more easily and produces a stronger, longer-lasting high
- The 2019 EVALI outbreak hospitalized over 2,800 people and was linked to vitamin E acetate in unregulated vape cartridges — a serious warning about untested products
- Higher-potency products are consistently tied to greater dependence risk, more intense withdrawal, and elevated risk of psychotic episodes in large-scale studies
- A 2016 analysis by ElSohly et al. in Biological Psychiatry found that average THC content roughly tripled from 1995 to 2014 — and selective breeding in legal markets has since pushed dispensary flower above 25%
Starting Point: The Cannabis Plant Itself
Cannabis Product Potency Spectrum: From Plant to Concentrate
THC in edibles passes through your liver, where it converts to 11-hydroxy-THC — a form that crosses into your brain more easily and produces a stronger, longer-lasting high. This liver conversion is why edibles hit harder than smoking despite potentially lower THC content.
Every cannabis product begins with the plant, specifically with structures called trichomes. Trichomes are tiny, mushroom-shaped glands that coat the surface of cannabis flowers. They produce the resin that contains THC, CBD, terpenes (the compounds responsible for smell and flavor), and other cannabinoids.
Raw cannabis flower typically contains 15 to 25% THC in products sold today. A 2016 analysis by ElSohly and colleagues, published in Biological Psychiatry, documented that average THC content in cannabis roughly tripled between 1995 and 2014, from about 4% to about 12%.[1] Since then, selective breeding has pushed flower potency even higher. That steady climb in THC potency over time matters because everything else on this list starts with that increasingly potent raw material and concentrates it further.
When you smoke or vaporize flower, you are consuming the whole plant profile: THC alongside CBD, terpenes, flavonoids, and dozens of other compounds. Some researchers theorize that this full-spectrum profile produces a moderating effect sometimes called the "entourage effect," though the evidence for this remains mixed and debated.
Solvent-Based Concentrates: BHO, CO2, and Ethanol Extraction
The majority of concentrates you see in dispensaries, products like wax, shatter, budder, live resin, and distillate, are made using solvent-based extraction. The basic principle is the same across all methods: a chemical solvent is used to dissolve the trichome resin away from the plant material, then the solvent is removed, leaving behind a concentrated mass of cannabinoids.
Butane Hash Oil (BHO)
BHO extraction passes liquid butane through cannabis plant material. The butane dissolves the trichome resin, pulling THC, terpenes, and other compounds into solution. The mixture is then heated under vacuum to purge the butane, leaving behind a concentrate that typically ranges from 60 to 90% THC.
The final texture depends on post-processing techniques. Shatter is made by allowing the purged extract to cool undisturbed into a glassy sheet. Wax and budder result from whipping or agitating the extract during purging, which incorporates air and creates a softer, opaque consistency. Live resin starts with flash-frozen plant material rather than dried flower, which preserves more of the original terpene profile.
BHO extraction is effective at producing high-potency products, but it carries risks during manufacturing. Butane is extremely flammable, and amateur home extraction attempts have caused explosions and severe burns. A 2015 report from the Journal of Medical Toxicology documented a significant increase in burn unit admissions related to home BHO production in states where cannabis was legal. This is one reason why understanding how these products are made matters even if you never plan to make them yourself.
CO2 Extraction
Supercritical CO2 extraction uses carbon dioxide under high pressure and controlled temperature to act as a solvent. Under these conditions, CO2 enters a "supercritical" state where it behaves as both a liquid and a gas, allowing it to dissolve cannabinoids and terpenes from plant material efficiently.
CO2 extraction is widely considered the cleanest solvent-based method because carbon dioxide evaporates completely at normal pressure, leaving no residual solvent in the final product. It is the method most commonly used to produce THC oil for vape cartridges and is the standard in many pharmaceutical-grade cannabis operations.
Ethanol Extraction
Ethanol (food-grade alcohol) can also be used to strip cannabinoids from plant material. The cannabis is soaked in ethanol, the liquid is strained off, and the ethanol is evaporated. This method is simpler and less expensive than CO2 extraction but tends to pull more chlorophyll and plant waxes along with the cannabinoids, which requires additional filtering to produce a clean product.
Ethanol extraction is commonly used for large-batch processing and for producing tinctures and RSO (Rick Simpson Oil), a thick, dark, full-spectrum extract.
Solventless Concentrates: Rosin and Hash
Not all concentrates require chemical solvents. Solventless methods use heat, pressure, or physical agitation to separate trichome resin from plant material.
Rosin is made by pressing cannabis flower or hash between heated plates under high pressure. The heat and pressure squeeze the resin out of the trichomes, producing a sticky, sap-like concentrate. Because no solvents are involved, rosin contains no residual chemicals. Potency typically ranges from 60 to 80% THC.
Bubble hash (also called ice water hash) uses ice water and agitation to freeze trichomes and break them off the plant. The mixture is filtered through progressively finer mesh screens (called bubble bags) to collect the trichome heads. The result is a granular or pressed concentrate that usually falls between 30 and 60% THC.
Traditional dry sift hash uses a similar concept without water. Dried cannabis is rubbed or shaken over fine screens, and the trichome heads that fall through are collected and pressed.
Why Concentrate Potency Matters for Your Brain
Regardless of how they are made, the end result of all concentrate production is the same: a product that delivers dramatically more THC per dose than flower. This is not a neutral fact. Research consistently links higher-potency cannabis products to faster tolerance development, greater risk of dependence, and more intense withdrawal.
A 2019 study by Di Forti and colleagues, published in The Lancet Psychiatry, found that daily use of high-potency cannabis was associated with approximately five times the risk of a first psychotic episode compared to people who had never used.[2] If you are using concentrates daily, the research on dab and concentrate addiction and withdrawal explains how the higher THC load translates into deeper neurological adaptation and more difficult recovery.
The route of consumption also matters. Dabbing and vaping concentrates deliver THC to your brain within seconds, which intensifies the reward signal in a way that slower delivery methods do not. If you are concerned about how vape pen use specifically affects dependence patterns, that article covers the mechanics in detail.
How Edibles Are Made
Edibles follow a different production logic than concentrates. The goal is not to create a concentrated form for inhalation but to infuse THC into a food or drink product that passes through your digestive system.
Decarboxylation: The Required First Step
Raw cannabis contains THCA (tetrahydrocannabinolic acid), not THC. THCA is the inactive precursor that does not produce psychoactive effects. When you smoke or vaporize cannabis, heat converts THCA to THC instantly. For edibles, this conversion has to happen before the THC is infused into food.
This process is called decarboxylation. Cannabis is heated at a controlled temperature (typically around 110 degrees Celsius for 30 to 45 minutes) to convert THCA into active THC. Skipping this step is the reason homemade edibles sometimes have no effect.
Infusion Into Fats or Alcohol
THC is fat-soluble, meaning it dissolves in fats and oils but not in water. Commercial edible production typically uses one of two approaches. The first infuses decarboxylated cannabis directly into butter or cooking oil, which is then used as an ingredient in baked goods, chocolates, or other food products. The second uses a pre-made cannabis extract (often a distillate produced by CO2 or ethanol extraction) that is measured and added to food products at precise dosages.
The distillate method is more common in commercial production because it allows for consistent dosing. Infusing whole flower into butter is less precise and more common in home production.
Why Edibles Hit Differently
The reason edibles produce a distinct effect is not just about dosing. It is about how your body processes THC when you eat it versus inhale it.
When you inhale cannabis, THC passes from your lungs directly into your bloodstream and reaches your brain within seconds. When you eat cannabis, THC passes through your stomach and into your liver before entering general circulation. Your liver converts a significant portion of the THC into 11-hydroxy-THC, a metabolite that crosses the blood-brain barrier more efficiently than regular THC and produces a more potent psychoactive effect.
This is why edibles feel stronger and last longer than smoking, even at equivalent THC doses. It is also why the onset is delayed, typically 30 minutes to 2 hours, and why overconsumption is more common with edibles. You cannot feel the full effect for up to two hours, so people often take more before the first dose has kicked in. If you want a deeper dive into how edible dependence and withdrawal differ from inhaled cannabis, the pharmacology of 11-hydroxy-THC is central to understanding why.
Tinctures: Alcohol or Oil-Based Liquid Extracts
Tinctures are liquid cannabis extracts, typically taken sublingually (under the tongue) using a dropper. They are made by dissolving cannabis extract in a carrier, usually MCT oil (medium-chain triglyceride, a coconut-derived fat) or food-grade ethanol.
Sublingual absorption bypasses the digestive system. THC absorbs through the blood vessels under your tongue directly into your bloodstream, producing effects faster than edibles (typically within 15 to 30 minutes) but slower than inhalation. Because tinctures skip the liver on first pass, they produce less 11-hydroxy-THC than edibles, making the effect profile closer to inhalation than to eating.
Tinctures are often used by people who want to avoid both the respiratory risks of smoking and the unpredictable intensity of edibles. They allow relatively precise dosing since the dropper can be measured.
Topicals: Cannabis Products That Do Not Get You High
Topical cannabis products, including creams, balms, lotions, and transdermal patches, are designed to be applied to the skin. Standard topicals do not produce psychoactive effects because THC does not penetrate deeply enough through the skin to reach the bloodstream in significant amounts.
The exception is transdermal patches, which are specifically engineered to push cannabinoids through the skin into systemic circulation. These can produce psychoactive effects, though they deliver THC much more slowly and evenly than inhalation or edibles.
Topicals are primarily marketed for localized pain and inflammation. A 2016 preclinical study by Hammell and colleagues, published in the European Journal of Pain, found that topical CBD reduced joint swelling and pain behaviors in a rat model of arthritis. Human clinical evidence for cannabis topicals remains limited, and most claims about their effectiveness are based on animal research or anecdotal reports rather than controlled human trials.
Vape Cartridges and the EVALI Warning
Vape cartridges typically contain cannabis oil produced by CO2 or ethanol extraction, often further refined into distillate. This oil is loaded into a cartridge with a heating element that vaporizes it for inhalation.
The most significant safety event in cannabis vaping history was the EVALI crisis (e-cigarette or vaping product use-associated lung injury) in 2019. The CDC documented over 2,800 hospitalizations and 68 deaths. The primary cause was identified as vitamin E acetate, an oily thickening agent added to black-market THC cartridges to make diluted oil appear full-strength. When heated and inhaled, it coated lung tissue and triggered severe inflammatory damage.
The EVALI outbreak was overwhelmingly linked to unregulated, illicit-market products, not lab-tested cartridges from licensed dispensaries. This distinction matters, but it does not mean regulated products carry zero risk. Vaping concentrated cannabis oil is a relatively new practice, and long-term pulmonary data does not yet exist. For a detailed comparison of how different consumption methods stack up in terms of health trade-offs, the harm reduction guide for smoking, vaping, and edibles covers the evidence for each.
When to Seek Professional Help
If your use of any cannabis product, particularly high-potency concentrates or daily edibles, has become difficult to control, or if you are experiencing symptoms when you try to stop, professional support is available. The complete guide to cannabis withdrawal covers what to expect, but you do not have to manage it alone.
SAMHSA's National Helpline is available at 1-800-662-4357. It is free, confidential, and open 24 hours a day, 7 days a week. You can also text "HELLO" to 741741 to reach the Crisis Text Line.
The Big Picture
Understanding how cannabis products are made is not about learning to produce them. It is about understanding what you are actually consuming and why different products affect your brain and body in different ways. A dab of shatter and a cannabis gummy may both contain THC, but the extraction process, the potency, and the route of delivery create fundamentally different experiences and different risk profiles. The more you understand about what is in the products you use and how they were made, the more equipped you are to make informed decisions about your own consumption.
The Bottom Line
Cannabis products span from raw flower (15-25% THC) to concentrates exceeding 90% THC, with each product type created through distinct processes that determine potency, delivery, and risk profile. All products originate from trichomes on cannabis flowers. ElSohly 2016 (Biological Psychiatry): average THC tripled from 4% (1995) to 12% (2014). Solvent-based concentrates: BHO (butane dissolution → 60-90% THC, textures: shatter/wax/budder/live resin), CO2 extraction (supercritical state, cleanest method, standard for vape carts), ethanol extraction (simpler, used for tinctures/RSO). Solventless: rosin (heat+pressure, 60-80% THC), bubble hash (ice water agitation, 30-60% THC). Concentrate potency implications: Di Forti 2019 (Lancet Psychiatry) — daily high-potency use = 5x first-episode psychosis risk; faster tolerance, deeper CB1 downregulation, harder withdrawal. Edibles: require decarboxylation (THCA→THC at ~110°C), infused into fats/oils; liver converts THC to 11-hydroxy-THC (crosses blood-brain barrier more efficiently → stronger, longer effect, delayed onset 30min-2hrs → overconsumption risk). Tinctures: sublingual absorption bypasses liver first-pass → less 11-hydroxy-THC, faster than edibles. Topicals: no psychoactive effect (exception: transdermal patches). Vape carts: CO2/ethanol distillate; 2019 EVALI crisis (2,800+ hospitalizations, 68 deaths) caused by vitamin E acetate in unregulated cartridges.
Frequently Asked Questions
Sources & References
- 1RTHC-01144·ElSohly, Mahmoud A. et al. (2016). “U.S. Cannabis Potency Tripled Over Two Decades While CBD Nearly Vanished.” Biological Psychiatry.Study breakdown →PubMed →↩
- 2RTHC-02010·Di Forti, Marta et al. (2019). “Daily High-Potency Cannabis Use and Psychosis Risk: The Largest European Study Drew a Direct Line.” The Lancet Psychiatry.Study breakdown →PubMed →↩
Research Behind This Article
Showing the 8 most relevant studies from our research database.
Adverse clinical effects associated with the use of synthetic cannabinoids: A systematic review.
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In non-therapeutic studies, high-concentration THC showed unfavorable associations with psychosis/schizophrenia (70% of studies) and cannabis use disorder (75%).
A Comprehensive Review of Cannabis Potency in the United States in the Last Decade.
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This third installment from the University of Mississippi's Potency Monitoring Program extended the dataset through 2019, adding 14,234 samples to the two previous reports (RTHC-00039 covering 1995-2014 and RTHC-00049 covering 2008-2017). THC continued its upward trajectory, reaching 14.88% in 2018 before a slight dip to 13.88% in 2019.
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Castaneto, Marisol S · 2014
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Newmeyer, Matthew N · 2016
Researchers gave the same dose of cannabis to both frequent and occasional users through three routes: smoking, vaporizing, and eating.
Variation in cannabis potency and prices in a newly legal market: evidence from 30 million cannabis sales in Washington state.
Smart, Rosanna · 2017
Analyzing Washington State's cannabis traceability data from July 2014 to September 2016 (over 44 million purchases), the study revealed several market trends. Traditional cannabis flower still dominated at 66.6% of spending, but extracts for inhalation (concentrates) grew by 145.8% in market share, reaching 21.2% of sales.