TAC vs THC: Why Total Active Cannabinoids Matter

September 19, 2024

If you have ever taken a look at the label on the back of your cannabis products, you may have seen an unfamiliar acronym: TAC. TAC stands for ‘total active cannabinoids,’ and it refers to the combined percentage of all active cannabinoids present within that product. TAC accounts for cannabinoids like THC, CBD, and more, which can understandably lead to acronym overload!

In this article, we’ll break down TAC vs THC, the differences, and examine why the total active cannabinoids matter.

Total Active Cannabinoids (TAC): Everything You Need to Know

TAC–or total active cannabinoids–is a number you’ll often find on a cannabis product label that indicates the total number of active cannabinoids present in the product. The term “active” refers to the cannabinoids in the product that have already undergone decarboxylation, or exposure to heat or light. This is important because it determines the potency and overall effect of the cannabis products you consume.1

Still confused? Here’s even more detail about TAC.


What is a Cannabinoid?

Cannabinoids, technically called phytocannabinoids since they are plant derived, are the chemical compounds in cannabis that give it its unique effects. This includes THC, CBD, and more than 150 others! These compounds interact with your endocannabinoid system, a biological system in your body that regulates various physiological processes, including mood, memory, and pain perception.2


What is THC?

Tetrahydrocannabinol–i.e. THC–is the most well-known cannabinoid, recognized for its psychoactive effects. It binds to the body’s endocannabinoid receptors to produce the “high” associated with consuming cannabis. THC content is heavily regulated, with various laws determining the allowable limits in cannabis products and where it’s sold.3


What Cannabinoids Are Included In TAC?

TAC includes a variety of cannabinoids, each with its own properties and effects, that contribute to the overall experience of cannabis products.4 While there are hundreds that we know of, the most widely known include THC, CBD, cannabigerol (CBG), cannabichromene (CBC), cannabinol (CBN), and tetrahydrocannabivarin (THCV).


How Does TAC Measure Cannabis Potency?

TAC is a comprehensive measure of cannabis potency. By accounting for all the active cannabinoids, TAC provides a more accurate presentation of a product’s strength compared to focusing solely on THC. This can be particularly useful for consumers looking to understand the full potential effects of a product.5


Differences Between TAC and THC

Imagine that TAC is the whole symphony, while THC represents only one musician and their instrument. All the instruments playing together, or even in groups, produce different results than the solo musician.

TAC encompasses all active (decarboxylated) cannabinoids in a cannabis product, which provides a broader measure of its potency. In contrast, THC is only one cannabinoid and isn’t an accurate measure of a product’s strength–unless it’s a THC-only product and not a broad-spectrum one.6

Two products with the same THC percentage won’t yield the same effects because the other cannabinoids also contribute to the product’s potency and effects. It’s essential to look at a product’s TAC because it gives you a comprehensive understanding of what you consume.


Impact of TAC on the Entourage Effect

The entourage effect is the synergy or combined interaction between compounds, including cannabinoids and cannabis terpenes. TAC plays a significant role in this effect by providing a holistic look at the active cannabinoids, which can boost the overall experience and therapeutic benefits of cannabis products. Considering TAC when choosing products can help you manage and achieve the desired effects more effectively. 


Frequently Asked Questions

It’s always best to ask your budtender if you have questions about a product’s potency and its potential effects. Here are some frequently asked questions and answers about TAC and THC.

How are TAC and THC related?
TAC includes THC as part of its total measurement. While THC is a single cannabinoid, TAC represents the sum of all the active cannabinoids in a marijuana product.

What is the entourage effect, and how does TAC influence it?
The entourage effect is the combined effect of different cannabis compounds working together. TAC influences this by measuring how the active cannabinoids contribute to the overall impact. 

In what parts of the cannabis plant are TAC and THC found?
Cannabinoids, like THC and CBD, are primarily found in the plant’s trichomes, which are small, crystal-like structures on the surface of cannabis flower and leaves. TAC measures all the active cannabinoids that are produced in the trichomes.7

Are some cannabis strains higher in TAC or THC?
Strains vary widely in their cannabinoid profiles. Some may have a higher THC content, while others may have a broader spectrum of cannabinoids that contribute to a higher TAC. The non-THC cannabinoid content is often less than the overall THC levels, but when you add all the compounds, they may comprise a high percentage of a product’s TAC profile. 

Understanding THC vs TAC

Understanding THC vs TAC is essential for making informed choices about the cannabis products you want to consume. Consider both to appreciate the full range of effects and benefits that cannabis may offer. Always check the cannabis product label for the THC and TAC percentages, and if you’re unsure, ask your favorite budtender for help.

 

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Sources

1. “What Are Total Active Cannabinoids (TAC) in Cannabis?” Leafwell, https://leafwell.com/blog/what-are-total-active-cannabinoids-tac-in-weed

2. “Cannabinoids,” National Library of Medicine, February 23, 2023, https://www.ncbi.nlm.nih.gov/books/NBK556062/

3. “What is THC?” Leafwell, https://leafwell.com/blog/what-is-thc-tetrahydrocannabinol

4. “What Exactly Is the Entourage Effect?” Leafwell, https://leafwell.com/blog/entourage-effect

5. “TAC vs THC,” Marijuana Packaging, September 11, 2023, https://marijuanapackaging.com/blogs/resources/tac-vs-thc

6. “Everything You Need to Know About THC Vs. TAC,” Veriheal, July 27, 2024, https://www.veriheal.com/blog/everything-you-need-to-know-about-thc-vs-tac/

7. “What are trichomes?” Weedmaps, https://weedmaps.com/learn/dictionary/trichome





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