Do CBD Gummies Lose Their Potency


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Here are a few things to know and consider when it comes to cannabis-infused edibles and their perishability. Ever wonder how long it takes for an edible to go bad? Check out our guide on how long edibles last before you stock up. A reader wants to know how long marijuana-infused edibles remain potent, and our Ask a Stoner columnist has the answer. Learn more at

Do edibles go bad?

It probably comes as no shock that, yes, edibles do expire. They are food products and as such, they will eventually go bad — or at the very least lose optimal freshness over time.

So what do you do when you happen upon a long-forgotten bag of infused gummies or an old cookie buried at the back of the cupboard? Here are a few things to know and consider when it comes to cannabis-infused edibles and their perishability.

Consider the ingredients

Let’s start off with some common sense. “It really just comes down to the starting material,” shared Carson Shipley of Seattle’s (Lux) Pot Shop. Some foods are more perishable and therefore have a shorter shelf life than others. A freshly baked cake without added preservatives won’t last as long as a more shelf-stable packaged good like a lollipop.

The shelf life of an edible depends on the type of edible, how it was made, and the preservatives that are added to it. Photo by: Gina Coleman/Weedmaps

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“The shelf life of an edible depends on the type of edible, how it was made, and the preservatives that are added to it,” explained Jesse Poe, Director of Edibles Operations for Chalice Farms in Oregon.

Some cookies and brownies were developed and formulated to be packaged and shelf-stable for a long time (think the nearly indestructible Twinkie), and these edibles will naturally have a longer shelf life than an infused cookie or brownie you make at home, for example. And while some products might not go bad per se (think a chocolate bar or gummy) they can get stale over time, and just might not be as enjoyable.

This is where that common sense, along with our evolutionary wisdom as members of the animal kingdom, comes in handy. If you’re questioning whether or not an edible has gone bad, use your senses as a guide. If the color, texture, smell, or flavor seems off, toss it.

Consider best-before dates

Of course, virtually all packaged edibles you buy from legal dispensaries come with an invaluable piece of information that helps take out the guesswork: the best-before or expiration date. “It’s best to consult the manufacturer of the edible to determine the shelf life of that edible because each edible is different,” added Poe.

With products that contain highly perishable ingredients like fresh butter or dairy, you’ll probably want to stick to the expiration dates given by the manufacturer. But what about shelf-stable products like lollipops, gummies, or chocolate? If the best-before date has passed does that mean you should just dispose of them? Not necessarily.

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Sugar acts as a great preservative, but over time texture, color, and flavor might become less than appealing. “The best-by date doesn’t have to do with the potency of the edible but the shelf life of the ingredients used. Something like a gummy or a chocolate will get stale over time similar to products purchased at the grocery store,” explained Shipley.

This brings up a whole new line of inquiry: potency and cannabinoids. Do cannabinoids like THC and CBD go bad?

Cannabinoids don’t go bad, but they do degrade

The good news is that cannabinoids like THC and CBD, the active molecules in edibles that produce effects in our bodies, don’t go bad — but they do degrade. This means that over time their molecular structure changes, and they may have less of or a different effect on you.

THC, for example, degrades into another cannabinoid you might be familiar with: CBN. Cannabinol (CBN) is often referred to as the sleepy cannabinoid, and while more research is needed to understand exactly how CBN might affect our sleep, it’s garnered a reputation for having sedative properties and given many folks a new view of their old weed.

Over time, and/or with excessive heat, light, and oxygen, THC will break down into CBN. CBN is considerably less intoxicating than THC, meaning the euphoria you associate with THC might turn into sleepiness if your edible has been sitting around for a while.

We haven’t yet studied exactly how bodily effects change when other cannabinoids like CBD degrade, though it’s a safe bet to assume that old edibles will be less potent. “All cannabinoids degrade over time. The rate of that degradation depends on how the edibles are stored and preserved. It is not uncommon for an edible to decrease in potency by 10 to 20% per year, if not stored properly,” added Poe.

Air, heat, light, and time are all working against the longevity of cannabinoids, which is why storage becomes especially important.

Storage tips

“It is always a good practice to keep edibles in a cool, dry, dark place. Environmental factors such as sunlight and heat can degrade the edible and the potency quickly,” advised Poe. An airtight container in a pantry or cupboard is a good way to store most store-bought and shelf-stable products like candy and chocolate. If a product is perishable enough to need refrigeration, it should say so on the label.

An airtight container in a pantry or cupboard is a good way to store most store-bought and shelf-stable products like candy and chocolate. Photo by: Gina Coleman/Weedmaps

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What about storing gummies and chocolate in the fridge or freezer? Will this extend their shelf life? That can help to extend the life of your edibles but be aware that unless they’re in their own airtight containers, they can absorb flavors and moisture from the environment. For infused edibles you might make at home, like condiments, oils, or butters, you can expect the same shelf-life as their non-infused varieties. Be sure to protect them from air, light, and heat, too.

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One final tip on edible storage: safety. With cannabis legalization spreading and hemp-derived CBD products now widely available, the number of incidents of kiddos and pets accidentally getting into edibles is also on the rise. Always lock your stash away in a safety box to make sure it doesn’t get into the wrong hands.

The bottom line

Cannabis-infused edibles can perish just like any other food. If you’re buying a pre-made edible, check out the product’s packaging for a best-before date. If you’re making edibles at home, follow the same rules and exercise the same common sense you would with any foods you make.

Know that cannabinoids like THC and CBD change and degrade over time, which can also change your experience with them. Always safely and securely store edibles in airtight containers away from moisture, heat, and light.

Do edibles expire?

Generally speaking, edibles can last and still get you high 3-6 months from when they are made, with proper storage. After that, the food itself may get stale and the THC may start to degrade.

All edibles have different shelf lives, and those bought at a licensed store or dispensary will usually have an expiration date indicating when the product is no longer safe to consume.

Some baked goods, like brownies and cookies, may go stale in a week or so, while gummies can stay fresh for months. If you stock up on edibles, you can put some in the freezer if you don’t plan on consuming them soon. Simply thaw out before eating.

Do edibles have a similar shelf life to regular foods?

Making food with a cannabis infusion shouldn’t affect the food’s shelf life. Edibles should have the same shelf life as their non-cannabis counterparts: A weed gummy will go stale in the same amount of time as a regular gummy, as will a weed brownie compared to a regular brownie, and so on.

Like regular foods, edibles with preservatives will last longer than those without preservatives—this is one reason why gummies are so popular.

Determining shelf life with homemade edibles is the same—if making your own batch of weed brownies, they should last as long as regular brownies.

Dear Stoner: How Long Do Edibles Stay Potent?

Dear Stoner: I recently found some edibles I’d forgotten I had — a candy bar that had been opened but was kept in the freezer, and a package of pot-infused mints, never opened. Does time affect potency? Can these spoil?
Missing Marn

Dear Marn: Treat any marijuana-infused food product as you would its regular counterpart. If there are ingredients in your food that spoil — such as the dairy in cheesecake — then, yes, your edibles will go bad. Brownies and cookies will last longer, though they’re likely to turn into the equivalent of a stale hockey puck. Fruitless candies like lollipops and mints are basically pure sugar before the pot is infused, so you can keep those for the apocalypse if you want (even if they taste like ass, they won’t hurt you). As with any other food you want to preserve, edibles should be refrigerated or frozen and kept away from oxygen and light to prolong their shelf lives.

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As for potency, take it from the experts at Love’s Oven, a wholesale Denver marijuana bakery: “You should always exercise caution when consuming any food product after its ‘use by’ or ‘best by’ date,” says spokesman Walter Nettles. “In all of our internal research on the subject, we at Love’s Oven haven’t found any degradation of THC in our products up to a year after this date. Although your edibles may not be as tasty as when they were first produced, their potent qualities should still be felt.”

And when in doubt, use the smell test.

Dear Stoner: I’ve always enjoyed Denver brewery tours. Am I able to do the same with dispensary grows?
Homer J

Dear Homer: Brewery tours are awesome. Not only do you learn about your favorite beers, but the breweries usually hand out a free sample or two or three afterward. By contrast, most cannabis-cultivation tours in Denver are still in the pot-tourism stage, with third-party companies charging hundreds of dollars for dispensary and grow-house tours. These tours have a lot of bells and whistles attached, such as airport pickup, lunch and some sort of after-party/entertainment.

For a local just looking for a quick tour, most of those ornamental experiences are a waste of money. Fortunately, some dispensaries will give you a free tour if you ask, and medical shops hoping to gain a patient’s caregiver rights are usually willing to show how the medicine is grown. Terrapin Care Station’s Aurora location, at 11900 East 33rd Avenue, holds free tours from 1 to 4 p.m. on Saturdays and Sundays, first come, first served.

Send questions to [email protected] or call the potline at 303-293-2222.

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