Walking into a dispensary can feel like trying to read a foreign language. THC, THCA, CBD, CBN, milligrams, serving sizes, full-spectrum, isolates—and then there’s a little QR code hidden somewhere on the package.
Fortunately, learning how to read a cannabis product label doesn’t require a chemistry degree.
Your cannabis product label is there to tell you what’s in the package, how much is there, how the product should be used or stored, and other important information about the product.
Whether you’re buying gummies, flower, pre-rolls, tinctures, beverages, concentrates, or other cannabis products, knowing what to look for can help you make more informed purchasing decisions.
Here’s how to read a cannabis label like a pro.
1. Start With the Cannabinoids: THC, THCA, CBD and More
One of the first things to look for on a cannabis product label is the cannabinoid profile.
What is THC?
THC (tetrahydrocannabinol) is the cannabinoid most commonly associated with the intoxicating effects of cannabis.
Depending on the product, you may see THC listed as a percentage, milligram amount, or both.
What is THCA?
THCA (tetrahydrocannabinolic acid) is the acidic precursor to THC. When exposed to heat, THCA can convert into THC through a process called decarboxylation.
This is particularly relevant when looking at cannabis flower and concentrates, where both THC and THCA may appear on the label.
Other cannabinoids you may see
THC and THCA aren’t the only cannabinoids that may appear on a label. You might also see:
- CBD – A non-intoxicating cannabinoid commonly included in a variety of cannabis and hemp-derived products.
- CBN – A cannabinoid that is often included in products marketed for relaxation or nighttime use.
- CBG – A minor cannabinoid that has attracted interest for its distinct properties.
- THCV – A cannabinoid structurally related to THC that can have effects that differ from traditional THC.
The important takeaway is this: don’t look only at the biggest THC number on the package. Look at the entire cannabinoid profile.
2. Understand Amount vs. Dosage
One of the easiest ways to get confused when reading a cannabis product label is mixing up the amount of product with the amount of cannabinoids it contains.
Amount generally refers to how much physical product is in the package.
For example:
- 1 gram of cannabis flower
- 2 grams of concentrate
- A 10-pack of gummies
- A 100 mL tincture
- A 12-ounce infused beverage
Dosage or cannabinoid content refers to how much of a particular cannabinoid is contained within that product or serving.
For example, a package might contain 10 gummies, with each gummy containing 10 mg of THC. The entire package would therefore contain 100 mg of THC.
When reading a cannabis label, ask two separate questions:
“How much product is in the package?”
And:
“How much cannabinoid is in each serving?”
Those numbers can be very different.
3. Check the Serving Size
The distinction between per serving and per package is especially important with cannabis edibles and beverages.
A product label may list cannabinoid content for the entire container while also providing the amount in a single serving.
For example, a chocolate bar could contain 100 mg of THC total, while the serving size is one square. A beverage could contain 20 mg of THC in the entire container but define a portion as less than the entire can.
Look for information such as:
Serving size: The amount considered one serving according to the product label.
Cannabinoid content per serving: The amount of a specific cannabinoid in that serving.
Total cannabinoid content: The amount contained in the entire package or container.
Don’t assume the largest number on the label represents a single serving. Always check the serving size and read the label carefully before consuming a cannabis product.
4. Look at the THC and CBD Content
Cannabis labels may provide cannabinoid content in different ways depending on the product.
For flower and concentrates, you may commonly see cannabinoid percentages.
For edibles, beverages, tinctures, and other products, cannabinoid content is often listed in milligrams (mg).
For example:
- THC: 10 mg per serving
- THC: 100 mg per package
- CBD: 25 mg per serving
The key is understanding what the number represents.
A 100 mg THC package doesn’t necessarily mean 100 mg is contained in one serving. If the package contains 10 equal servings, for example, each serving would contain 10 mg.
5. Is It an Isolate, Full-Spectrum or Broad-Spectrum Product?
You may also see terms such as isolate, full-spectrum, or broad-spectrum on cannabis product labels.
Isolate
An isolate is a purified form of a single cannabinoid. For example, a CBD isolate is primarily CBD without the broader range of cannabinoids and plant compounds found in a full-spectrum extract.
Full-spectrum
A full-spectrum product contains a broader range of naturally occurring cannabinoids and other cannabis compounds.
Broad-spectrum
A broad-spectrum product contains multiple cannabis compounds but has had a particular cannabinoid—often THC—removed or significantly reduced.
If these terms appear on the package, they’re worth understanding because they describe the type of extract or cannabinoid profile used in the product.
6. Read the Ingredient List
Cannabis isn’t necessarily the only thing inside the package.
This is especially important for edibles, beverages, tinctures, capsules, and topicals.
Depending on the product, the ingredient list may include:
- Sweeteners
- Flavorings
- Oils
- Emulsifiers
- Preservatives
- Food allergens
- Botanical ingredients
- Other plant extracts
If you have food allergies or dietary restrictions, the ingredient list can be just as important as the cannabinoid information.
Don’t assume a cannabis product contains only cannabis. Check the ingredients before purchasing or consuming it.
7. Check the Expiration or Best-By Date
Cannabis products can also have expiration dates, best-by dates, or other date information on their packaging.
These dates can provide information about how long the manufacturer expects the product to maintain its intended quality when stored according to the product’s instructions.
You should also look for storage instructions.
Depending on the product, the packaging may recommend protecting it from:
- Excessive heat
- Direct light
- Moisture
- Air exposure
Following the manufacturer’s storage instructions can help maintain the product’s intended quality.
8. Find the Batch or Lot Number
Another piece of information worth knowing is the batch or lot number.
A batch or lot number identifies a particular group of products manufactured or processed together. It may be useful when looking up laboratory testing information or other product-specific details.
If you ever need to contact the manufacturer or dispensary about a specific product, having the product name and batch or lot number available can also be helpful.
9. Scan the QR Code and Check the COA
Ready to go beyond the information printed directly on the package?
Look for a COA, or Certificate of Analysis.
A Certificate of Analysis is a laboratory report that provides information about a particular product based on laboratory testing. Depending on the product and applicable testing requirements, a COA may include cannabinoid potency information and testing for various contaminants.
Many cannabis products include a QR code that can direct you to the product’s laboratory results.
If a QR code is provided, scan it and make sure the information corresponds to the product you’re holding. Look for details such as the product name, batch or lot number, testing date, and laboratory information.
A COA can provide considerably more detail than the front of the package alone.
10. Pay Attention to Required Warnings and Product Information
Cannabis packaging may also contain important warnings, instructions, and regulatory information.
Depending on where you live and the type of product you’re purchasing, the label may include information about:
- Recommended use
- Serving size
- Storage
- Warnings
- Age restrictions
- Manufacturing information
- Batch or lot numbers
- Testing information
- Packaging dates or expiration information
Don’t skip the fine print. Some of the most useful information on a cannabis product label may be in the sections that are easiest to overlook.
Cannabis Label Reading: What to Check Before You Buy
When you’re standing at the dispensary trying to compare products, you don’t have to decipher every number on the package.
Start with these basics:
1. Cannabinoids: What’s in the product—THC, THCA, CBD, CBN, CBG or other cannabinoids?
2. Amount: How much physical product is in the package?
3. Serving size: How much product is considered one serving?
4. Cannabinoid content: How much THC, CBD or other cannabinoids are in each serving and in the entire package?
5. Ingredients: What else is in the product?
6. Product type: Is it an isolate, full-spectrum or broad-spectrum product?
7. Date and storage information: Is there an expiration or best-by date, and how should the product be stored?
8. Batch or lot number: Can you identify the specific production batch?
9. COA: Is laboratory testing available, and does it correspond to the product?
Label Reading = Knowing What You’re Consuming
A good cannabis shopping experience starts with understanding what you’re actually buying.
Before you purchase or consume a product, look beyond the big THC number. Check the cannabinoid profile, serving size, total cannabinoid content, ingredients, product type, dates, storage instructions, and available laboratory testing.
And if a label leaves you scratching your head, ask your budtender. That’s what they’re there for.
At Ignite, we believe education is part of the cannabis experience. You shouldn’t need a chemistry degree to understand a product label.
The more you know about what’s inside the package, the more confidently you can compare products and choose what’s right for you.
Frequently Asked Questions About Cannabis Product Labels
What should I look for on a cannabis product label?
Start by looking at the cannabinoid profile, serving size, total cannabinoid content, ingredients, product type, expiration or best-by date, storage instructions, batch or lot number, and available laboratory testing. Pay particular attention to whether cannabinoid amounts are listed per serving or for the entire package.
How do you read THC on a cannabis label?
THC may be listed as a percentage or in milligrams, depending on the type of product. For edibles and beverages, check both the THC per serving and the total THC in the package. For flower and concentrates, THC is commonly expressed as a percentage of the product’s weight.
What is the difference between THC and THCA on a label?
THC is the cannabinoid commonly associated with cannabis’s intoxicating effects. THCA is the acidic precursor to THC. When THCA is exposed to heat, it can convert into THC through decarboxylation.
What does mg mean on a cannabis label?
“Mg” stands for milligrams, a unit of measurement used to indicate the amount of a cannabinoid such as THC or CBD. On products such as edibles and beverages, labels may list milligrams per serving as well as the total milligrams in the package.
What is the difference between THC per serving and total THC?
THC per serving tells you how much THC is contained in one labeled serving. Total THC tells you how much THC is contained in the entire package or container. These numbers can be very different, so always check the serving size.
What is a Certificate of Analysis (COA) for cannabis?
A Certificate of Analysis, or COA, is a laboratory report containing information about testing performed on a specific cannabis product. Depending on the product and applicable requirements, it may include cannabinoid potency and testing for contaminants.
How do I find the COA for a cannabis product?
Look for a QR code or other testing information on the package. If available, it may direct you to the laboratory results for the product. When checking a COA, compare identifying information such as the product name and batch or lot number with the package you’re holding.
What does full-spectrum mean on a cannabis label?
Full-spectrum generally means the product contains a broader range of naturally occurring cannabinoids and other cannabis compounds rather than a single purified cannabinoid.
What does cannabis isolate mean?
An isolate is a purified form of a single cannabinoid. For example, a CBD isolate is primarily CBD rather than a broader mixture of cannabinoids and other cannabis compounds.
What does broad-spectrum mean on a cannabis product?
Broad-spectrum generally refers to a product containing multiple cannabis compounds while having a particular cannabinoid, often THC, removed or significantly reduced.
Why are ingredients important on a cannabis label?
Ingredients are particularly important for edibles, beverages, tinctures, and topicals because these products can contain sweeteners, flavorings, oils, emulsifiers, preservatives, allergens, and other ingredients in addition to cannabis compounds.
Does cannabis expire?
Cannabis products can have expiration dates, best-by dates, or other date information indicating the manufacturer’s expected quality period. Always follow the product’s storage instructions and check the packaging for applicable date information.
Why is the batch or lot number important?
A batch or lot number identifies a specific group of products produced or processed together. It can help connect a product to its laboratory testing and may be useful if you have questions about a particular product.
Should I only look at the THC percentage when buying cannabis?
No. THC is only one part of a cannabis product’s profile. Depending on the product, you may also want to consider other cannabinoids, serving size, total cannabinoid content, ingredients, product type, and available laboratory testing.
Can a budtender help me understand a cannabis product label?
Yes. If you’re unsure what a cannabinoid, serving size, ingredient, or other label term means, asking a knowledgeable budtender can be a helpful way to better understand the product before making a purchase.