Edibles are known for hitting harder and lasting longer than smoking or vaping cannabis. When you’re talking about a 100mg THC edible, the experience can be especially intense and long-lasting. For many consumers, this raises an important question: how long does a 100mg edible actually last?

The short answer is that a 100mg edible can last much longer than most people expect, especially if you’re not used to high doses of THC. The effects don’t just come on slower. They can stay noticeable for hours and may linger into the next day. Understanding what to expect can help you plan ahead and avoid an uncomfortable experience.

This guide breaks down how long a 100mg edible lasts, what affects its duration, and how to use high-dose edibles more responsibly.

What Is a 100mg Edible?

A 100mg edible is a cannabis-infused product that contains 100 milligrams of THC total. That might be a single edible item or a package made up of multiple servings. Many gummies, chocolates, and baked goods are designed to be split into smaller doses (often 10mg pieces), meaning a 100mg product can contain multiple servings.

To put it simply, 100mg is generally considered a high-dose edible and is usually better suited for experienced consumers or medical users who already know how edibles affect them.

How Long Does a 100mg Edible Take to Kick In?

One of the biggest differences between edibles and inhaled cannabis is onset time. When you eat an edible, THC must move through your digestive system and be processed by the liver before it enters the bloodstream.

For most people, a 100mg edible begins to kick in within 30 minutes to 2 hours. In some cases, it can take longer. Common factors that influence how quickly it starts include:

• Whether you’ve eaten recently
• Your metabolism
• The type of edible (gummies vs baked goods vs drinks)
• Your personal body chemistry

Because the onset is delayed, many people make the mistake of taking more before the first dose fully kicks in. With a high dose like 100mg, that can quickly turn a “strong high” into an overwhelming one.

How Long Do the Effects of a 100mg Edible Last?

A 100mg edible lasts much longer than smoking or vaping and often feels stronger because the body converts THC into 11-hydroxy-THC, a more potent and longer-lasting compound.

After consumption, peak effects usually occur 2 to 4 hours in, when users may feel strong euphoria, heavy body sensations, deep relaxation, and noticeable mental effects like time distortion. For people without a high tolerance, this intensity can feel overwhelming.

For most consumers, the primary effects of a 100mg edible last 6 to 12 hours, with duration varying based on tolerance and metabolism. A study found measurable psychoactive effects from oral THC up to 8 hours after ingestion.

Even after the main high fades, some people report lingering effects into the next day, such as:

• Grogginess or feeling “foggy”
• Heavier body sensations
• Lower motivation or slower thinking

This is more common with higher doses, later-in-the-day consumption, or slower metabolism.

READ: How Long Do Edibles Take to Wear Off

Factors That Affect How Long a 100mg Edible Lasts

Two people can take the same edible and have very different experiences. Duration and intensity often depend on:

• THC tolerance: Frequent users may feel less intense effects, and the experience may fade sooner.
• Body weight and metabolism: Faster metabolism may shorten the window; slower metabolism can extend it.
• Empty vs full stomach: An empty stomach can lead to faster onset and sometimes a stronger peak.
• Edible type and formulation: Drinks and fast-acting edibles may hit sooner; fatty baked goods may digest more slowly.
• Frequency of use: Occasional users tend to feel stronger effects for longer.

How Long Does a 100mg Edible Stay in Your System?

“Lasting” can mean two things:

1. how long you feel high, and
2. how long THC metabolites remain detectable in the body.

Even if you feel sober, THC metabolites can remain for days (or longer), especially with higher doses and frequent use.

Mayo Clinic Laboratories notes that urine testing can indicate THC exposure within 3 days after a single use and up to 30 days in heavy chronic users. This matters for anyone who may face workplace or legal drug testing, since detection is not the same as current impairment.

Is 100mg Too Much? What It Can Feel Like

For many people, 100mg is too much, especially if you don’t have a strong tolerance. Taking too much THC isn’t typically dangerous in a life-threatening way, but it can be intensely uncomfortable. Common signs of overconsumption include:

• Anxiety or panic
• Paranoia
• Rapid heart rate
• Nausea
• Dizziness
• Confusion or feeling overwhelmed

Because edibles last so long, those effects can stick around for hours.

What to Do If a 100mg Edible Feels Too Strong

If you’ve taken too much, the key thing to remember is: it will pass. Try to reduce stimulation and support your body while you ride it out.

Helpful steps:

• Drink water (small sips if you’re nauseated)
• Lie down in a quiet, comfortable place
• Eat a light snack if you can tolerate it
• Focus on slow breathing (in for 4, out for 6)
• Avoid alcohol or taking more THC

Some people find CBD helps take the edge off THC, but results vary. If symptoms feel severe or you’re worried, it’s okay to seek medical help.

Tips for Taking High-Dose Edibles More Safely

If you plan to use a 100mg edible, a cautious approach matters.

• Start with a portion, not the full 100mg at once (unless you already know you tolerate it well)
• Wait at least 2 hours before taking more
• Avoid mixing with alcohol
• Plan for a long window of effects (don’t schedule obligations)
• Don’t drive or operate machinery
• Eat a light meal beforehand to help moderate absorption
• Stay hydrated before and during the experience
• Choose a familiar setting where you feel comfortable and safe
• Avoid combining edibles with other substances, including additional THC products
• Keep CBD on hand, as some people find it helps counterbalance THC’s intensity
• Use edibles earlier in the day if possible to reduce next-day grogginess
• Store high-dose edibles securely and clearly labeled

High-dose edibles are best saved for times when you can fully relax in a safe, familiar environment.

So, How Long Does a 100mg Edible Last?

For most people, a 100mg edible delivers a long-lasting and intense experience, with effects typically lasting 6 to 12 hours and peaking 2 to 4 hours after consumption. Because edibles are processed differently than inhaled cannabis, the effects can feel stronger and linger longer than expected, especially at higher doses.

A 100mg edible isn’t a casual choice. It’s best suited for experienced users who understand their tolerance and can plan for an extended window of effects, including possible next-day aftereffects. When approached thoughtfully and used in the right setting, high-dose edibles can offer a prolonged, controlled experience.

Frequently Asked Questions 

When will a 100mg edible peak?

A 100mg edible usually peaks 2 to 4 hours after consumption. This is when THC levels in the bloodstream are highest and effects feel strongest. The peak may arrive later if taken on a full stomach.

Why do edibles last longer than smoking cannabis?

Edibles last longer because THC is processed by the liver into 11-hydroxy-THC, which is more potent and longer-lasting than inhaled THC. Smoking delivers THC directly to the bloodstream, causing faster but shorter effects.

Do edibles affect people differently than smoking?

Yes, edibles often feel stronger, more body-focused, and more mentally intense than smoking. They also take longer to kick in and last much longer. Individual metabolism and tolerance play a larger role with edibles.

Is 100mg too much edible for a beginner?

Yes, 100mg is considered far too much for most beginners. New users are typically advised to start with 5-10mg. Taking 100mg without tolerance can cause anxiety, nausea, and prolonged discomfort.

How long does a 100mg edible stay in your system?

While the high may wear off within a day, THC metabolites can remain in the body for several days to weeks. Detection time depends on frequency of use, dose, and metabolism. A single high-dose edible can still be detectable after the effects are gone.

Are there differences in duration between different edible types?

Yes, different edibles can vary in onset and duration. Gummies and drinks may kick in faster, while baked goods and fatty edibles often last longer. Potency, formulation, and digestion speed all affect how long effects last.