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Table of Contents
- What Is TAC in Cannabis?
- TAC vs. THC – What’s the Difference?
- Understanding Cannabinoids in Weed and Marijuana
- Why Total Active Cannabinoids (TAC) Matter
- THC in Cannabis Products
- TAC and User Experience
The cannabis world is full of acronyms. There are over 100 identified cannabinoids in the cannabis plant (1), and shorthand terms like THC, CBD, CBN, THCA, and CBC make it easier to talk about them. But TAC is a little different. It’s not shorthand for a specific cannabinoid. It means total active cannabinoids, and it’s a measure of the combined amount of active cannabinoids present in a cannabis product—not just THC.
It’s easy to assume TAC has something to do with THC, because they share a few letters. But it gives you a much broader picture of all of the cannabinoids in a particular cannabis product. Let’s walk through the specifics.
What Is TAC in Cannabis?
Aside from THC, TAC might be one of the most useful numbers on the label of a cannabis product for some people. It’s a reflection of the cannabinoid content as a whole, so think of it as a “big picture” metric.
What Does TAC Stand For?
TAC is short for total active cannabinoids. In a lab report, it reflects the combined amount of active cannabinoids present and detectable in a particular product.
TAC can be expressed in percentages (more common with flower) or milligrams (more common with concentrates and edibles).
What Is TAC vs. THC?
THC is short for tetrahydrocannabinol, the intoxicating compound in cannabis. It’s a single cannabinoid known for potent psychoactive effects. On cannabis products, the THC amount gives you an idea of potency.
TAC measures THC and all of the other cannabinoids that are detectable in measurable amounts. In other words, it tells you how cannabinoid-rich a particular product is.
Is TAC the Same as Total Cannabinoids?
Both terms usually refer to the same calculation, but it varies depending on the lab or state conducting the testing.
On third-party lab reports, or certificates of analysis (COA), individual cannabinoids are typically listed. These reports may also list calculations representing total THC, total CBD, or total cannabinoids. That term generally describes the sum of all the cannabinoids detected during testing.
TAC is usually found on packaging in lieu of “total cannabinoids.”
Where Can You Find TAC on Labels?
You’re most likely to spot a TAC label on products purchased at licensed dispensaries in states with legal recreational or medical marijuana. These states tend to mandate comprehensive lab testing.
On the label, you’ll often find a THC percentage, a total THC number, and the TAC number. For cannabis connoisseurs, TAC can be an appealing differentiator beyond THC potency alone.
The TAC labels aren't as common on hemp-derived CBD and THC products sold outside dispensaries. Labels on these products typically highlight the CBD content and delta-9 THC compliance, and may also list other cannabinoids.
TAC may also appear on COAs, but if you don’t see it, check for total cannabinoids instead.
TAC vs. THC – What’s the Difference?
TAC and THC may sound similar, and there is a little overlap. But they aren’t the same thing.
THC is short for tetrahydrocannabinol, a single cannabinoid with psychoactive effects.
TAC is a measure of all the active cannabinoids present in a product. It includes THC and all the other cannabinoids that can be detected in measurable amounts.
What Does TAC Stand For in Cannabis?
In cannabis, TAC means total active cannabinoids. It’s usually found on product labels to give consumers an idea of all the measurable cannabinoids in a specific product batch.
TAC may be shown as a percentage or in milligrams.
How Is TAC Different from THC?
THC (tetrahydrocannabinol) is a single cannabinoid, but TAC is a measure of THC and all the other active cannabinoids in a product.
Why Is TAC Important on Product Labels?
TAC is a reflection of all the cannabinoids present and measurable in a product, so think of it as context. For people who want a well-rounded cannabis product with a more complex cannabinoid profile, a higher TAC can be appealing.
Plus, it may help explain why products with the same THC amount can produce noticeably different effects.
Understanding Cannabinoids in Weed and Marijuana
The cannabis plant is full of cannabinoids that interact with the body’s endocannabinoid system in different ways. This complex signaling system works to balance various systems, like mood, pain response, stress response, appetite, and memory.
If you’re new to cannabis, learning more about the most common cannabinoids and the effects they tend to produce can help you make sense of product labels—and zero in on what might best meet your needs. That can be helpful if you're exploring different products for potential therapeutic benefits or are interested in the entourage effect.
What Are Cannabinoids?
Cannabinoids from cannabis are technically known as phytocannabinoids. They’re chemical compounds made in hemp and marijuana plants, and there are a lot of them. You’re probably familiar with a few of them, at least by name—THC and CBD.
Phytocannabinoids can interact with receptors in the body’s endocannabinoid system. Some do so directly, like THC on CB1 receptors. Others seem to influence receptors and pathways a little more indirectly.
That level of interaction within the endocannabinoid system ultimately determines effects. THC’s tight bind, for instance, is the reason for its psychoactive effects. Other cannabinoids, like CBD, interact differently, which may explain their therapeutic benefits.
How Many Cannabinoids Are in Cannabis?
There are over 100 identified cannabinoids in cannabis (1), but many are minor. That means they aren’t present in measurable amounts in many consumer products.
Studies into cannabinoids and their effects are ongoing. There’s far more research into primary cannabinoids like THC and CBD than minor cannabinoids like CBC or CBN. Not all cannabinoids have psychological effects, and studies are learning more about potential therapeutic benefits.
Why Total Active Cannabinoids (TAC) Matter
TAC indicates the total amount of active cannabinoids in a product—or at least, the ones that can be measured. It helps you understand why products with similar THC levels don’t always feel the same in practice.
Remember that cannabinoids interact with one another as well (that's the idea behind the entourage effect), and even small amounts can alter a product's profile.
Does Higher TAC Mean Stronger Weed?
No. A higher TAC doesn’t necessarily mean a higher THC concentration. It just means a higher overall amount of measurable cannabinoids. Not all cannabinoids produce psychoactive effects, so a higher TAC doesn’t guarantee a stronger experience or more intoxication.
That’s generally influenced by THC potency, not the TAC.
How TAC Impacts Effects and Potency
TAC doesn’t guarantee specific effects or a higher potency. It’s just a measure of all the detectable cannabinoids in a product.
It’s true that cannabinoids interact with one another, which can influence the overall experience. That’s the idea behind the entourage effect. But TAC itself isn’t a reliable predictor of how a product might feel.
Effects have more to do with THC potency, terpene profiles, and your own tolerance levels.
TAC vs. THC: What’s More Important?
Neither is automatically more important, since it’s really a matter of what’s more important to you.
If you’re interested in stronger effects and more intoxication, the THC percentage will probably be the more important metric.
If you want a product with a more complex cannabinoid profile, TAC can be more useful.
In most cases, TAC is secondary to THC, especially when someone is comparing two products with a similar THC content. But again, it’s personal.
THC in Cannabis Products
THC is the primary psychoactive compound in cannabis and the reason we all associate the plant with being “high.” It creates intoxicating effects like euphoria, altered perceptions, and relaxation. Understanding THC is important, especially when it comes to the psychoactive experience.
What Is Delta-9 THC?
Delta-9 THC is just THC—arguably the most famous cannabinoid. It’s different from THCA (tetrahydrocannabinolic acid), which is the precursor to THC, and it’s not the same as delta-8 and delta-10 THC either.
Are THC Levels Always Shown Separately from TAC?
Almost always, particularly in regulated cannabis markets for medicinal and recreational use. THC gets its own breakdown in percentage or milligram terms, since it’s often the compound consumers are searching for. That’s true with hemp-derived THC products as well.
TAC, if included, is a separate figure that represents all measurable cannabinoids, not just THC.
How to Interpret THC Percentage on Labels
Higher THC percentages usually mean stronger intoxicating effects. To be federally compliant, THC percentage can’t exceed 0.3% delta-9 THC by dry weight. But in states with legal recreational or medical marijuana, you can find much higher THC percentages.
Of course, more isn’t always better. The best approach is to opt for a lower dose and wait an appropriate time period to gauge effects. Otherwise, you put yourself at risk of negative side effects, like anxiety, paranoia, and physical discomfort.
TAC and User Experience
When it comes to cannabis, the experience is personal. People may explore cannabis for different desired outcomes. Product labels can offer some idea of expected effects when you understand what’s being detailed, and TAC is part of that.
Remember, individual metabolism, consumption habits, and frequency of use all play a role in every experience.
Is a Higher TAC Better for Effects?
Not necessarily. A higher TAC means there are more measurable cannabinoids in a product, but that doesn’t mean better effects or a stronger experience.
Again, it’s personal and really comes down to what people desire in their cannabis experience.
How TAC Affects the High from Marijuana or Weed
TAC doesn’t directly determine the high from cannabis. That’s mostly influenced by THC.
TAC indicates the amount of all cannabinoids in a product. And since cannabinoids may interact with one another—that’s the idea behind the entourage effect—a higher TAC could change the experience. Still, TAC by itself doesn’t really tell you much about specific effects.
Choosing Cannabis Based on TAC vs. THC
For potent intoxicating effects, THC is a more valuable metric than TAC. But checking TAC between two products with a similar THC level can tell you which one has more cannabinoids overall.
That’s why some people make a point of checking both numbers.
