What Is a Cannabis Tincture? Reading the Label: Carrier, Volume, and Milligrams

What a tincture is, and why the label matters most

A cannabis tincture is a liquid product: cannabis extract mixed into a carrier liquid and sold in a bottle, usually with a graduated dropper. This guide is for adults 21 and older, and it stays on the measurable side of the product. It covers what a Minnesota label has to tell you and how to read the numbers. It does not cover how any product feels or what it does.

Tinctures are one of several formats. If you want the wider picture first, see our overview of types of cannabis products. The reason a liquid deserves its own article is the arithmetic. Flower is sold by weight. A tincture is sold by the bottle, and the numbers on that bottle only make sense once you know which figure describes what.

What the label must show

Minnesota sets the minimum label content for cannabinoid products in Minn. Stat. 342.63, subd. 3. The label must carry at least the net weight of the product, the serving size, the cannabinoid profile per serving and in total, the batch number, and verification that the product was tested under section 342.61. The statute also says labels must follow rules adopted under the chapter and any other information the Office of Cannabis Management requires.

Two of those items do most of the work on a tincture. The serving size tells you what amount the label is counting as one serving. The per-serving and total cannabinoid figures tell you how much THC and CBD sit in that serving and in the whole bottle. The batch number ties the bottle to its test record; our guide to what a batch number means explains that link, and the store's lab results page is where certificates of analysis are kept.

Weight or volume, and where the carrier shows up

One detail is worth getting exactly right. The statute lists the "net weight" of the product. The Office of Cannabis Management's retail labeling rule, Minn. R. 9810.1401, is more specific for ingestible products: the label must show "the net weight or net volume of the product." A liquid in a bottle is naturally measured in milliliters, so volume is the figure you will usually see on a tincture.

The same rule requires the serving size and the number of servings per container, the THC and CBD content per serving in milligrams, and the THC and CBD content of the entire package in milligrams. It also requires the ingredients, including excipients, to be listed in descending order by weight.

That ingredient list is where you find the carrier. The carrier is the liquid the extract is mixed into. It might be an oil, such as MCT oil, olive oil, or coconut-derived oil, or it might be another liquid. The label names it, and because ingredients are listed by weight, the carrier typically appears near the top of the list for a bottle that is mostly liquid. The rule does not say which carriers are allowed or preferred, and this article does not rank them. What it does tell you is that the carrier is a labeled ingredient, so you never have to guess what the liquid is.

The milligrams-per-milliliter arithmetic

You will often hear tinctures described by concentration, milligrams per milliliter, or mg/mL. In the rule we reviewed, that figure is not a required label item. The required figures are milligrams per serving and milligrams per package, along with the net volume. Some producers print a per-milliliter number anyway, and you can work it out yourself with one division.

Here is a made-up example, not a real product. Suppose a label shows:

• Net volume: 30 mL
• THC per package: 300 mg
• Serving size: 1 mL

The concentration is 300 mg divided by 30 mL, which is 10 mg per mL. A 1 mL serving would therefore be printed as 10 mg of THC, and the bottle would hold 30 servings. If the label instead listed a serving size of 0.5 mL, the same bottle would show 5 mg per serving and 60 servings. The bottle didn't change. Only the printed serving size did.

Here is the habit to build: check the serving size the label states before comparing two bottles. A 600 mg bottle is not automatically stronger than a 300 mg bottle if one is 60 mL and the other is 15 mL. Divide the package total by the volume and you are comparing like with like.

The dropper as a unit of volume

Most tinctures come with a dropper, and many droppers have marks along the glass or plastic. Treat those marks as a ruler for volume. If a label says the serving size is 1 mL, the dropper's 1 mL line is how you would measure out that volume. The dropper doesn't change what the label says. And this isn't advice on how much anyone should use; that's a question for a licensed clinician. What the label gives you is the serving size it is counting and the milligrams in it.

One practical point: dropper markings differ between brands, and the label is the authority on the serving size. If the markings and the label do not seem to agree, ask the budtender at the counter before you leave. They can read the label with you, though they cannot answer medical questions. Our piece on what to ask a budtender covers where that line sits.

Packaging

Under Minn. Stat. 342.62, cannabis products must be prepackaged in packaging that is child-resistant, tamper-evident, and opaque, and products with more than one serving must be resealable. Packaging materials also cannot be ones the FDA has not approved for food, or contain perfluoroalkyl substances. The statute handles hemp beverages separately, so check the section if you are comparing a drink to a bottle. For what to do once you are home, see storing products at home.

A short checklist for reading any tincture label

• Find the net volume or net weight.
• Find the serving size and the number of servings per container.
• Find the THC and CBD in milligrams per serving and per package.
• Divide the package total by the volume if you want milligrams per milliliter.
• Read the ingredient list for the carrier and anything else added.
• Check the batch number and testing statement.

Rules change, so confirm anything specific on revisor.mn.gov or with the Office of Cannabis Management before relying on it.

Frequently Asked Questions

What is a cannabis tincture?

A liquid product in which cannabis extract is mixed into a carrier liquid, sold in a bottle and labeled with its net volume or weight, serving size, and milligrams per serving and per package.

Does a Minnesota tincture label have to print milligrams per milliliter?

The rule we reviewed, Minn. R. 9810.1401, requires milligrams per serving and per package plus the net weight or net volume. It does not name a per-milliliter figure. Some labels print one anyway, and you can work it out by dividing the package total by the volume.

Where does the carrier show up on the label?

In the ingredient list. Under Minn. R. 9810.1401, ingredients including excipients are listed in descending order by weight.

Is the dropper a dosing tool?

This article treats it only as a unit of volume that explains how a serving size is printed. Questions about how much to use belong with a licensed clinician.

For adults 21 and older only. Cannabis products have not been analyzed or approved by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Keep out of reach of children. Do not operate a vehicle or machinery after use. This article is general information about products sold in Minnesota, not medical advice; talk to a licensed clinician about your health.