weed hangover

Weed Hangover – Causes, Symptoms & Treatments

Is there such a thing as a weed hangover? Can excessive marijuana smoking or edible cannabis use lead to hangover symptoms? And how to cure a weed hangover?

The overindulgence of cannabis products, such as edibles, dry flower and concentrates, can lead to a myriad of adverse side effects, including headaches, fatigue, brain fog and a condition known as cottonmouth. 

In the following guide, we will discuss the phenomenon known as the weed hangover, whether it’s real, symptoms, and potential treatment methods to stop it from happening at all. 

Is There Such a Thing as a Weed Hangover?

We’ll give you a hint. The answer is yes. 

That said, there are large disparities in weed hangover symptoms compared to an alcohol hangover. While smoking weed is an excellent pastime and method to reap the benefits of cannabis, it does carry potential hangover effects that could seep into the next day. 

Overall, you’re unlikely to experience lingering effects from cannabis use the same way you would from drinking too much alcohol. However, there are some similar symptoms. 

While a weed hangover tends to be nowhere near as unpleasant as alcohol hangover symptoms, they still occur. In the following section, we’ll discuss everything you need to know from studies and research at this time.

What is a Weed Hangover?

what is a weed hangover

The effects of smoking cannabis, whether recreational or medicinal, can produce residual impacts. Sadly, there is little research to inform us of the numerical statistic of just how many people experience a weed hangover after consuming too much marijuana. 

However, we know that there can be lingering effects from smoking weed in large quantities and that they usually occur the next morning. These effects typically resonate in temporary mental and physical imparities that make it difficult to focus, stay on task or operate machinery.

We do not know if using smoked, vaped, or edible marijuana impacts the intensity of symptoms. Further research is necessary regarding this issue to better understand the causes of a weed hangover.

Until then, the best thing one can do is focus on how you feel the following day and study how you, as an individual, experience weed hangover effects. 

According to current research, ingesting cannabis and experiencing its effects varies significantly from one person to another. Various physical factors such as build, weight, age, and gender play massive roles in intensity and side effects. 

Weed Hangover Symptoms

A weed hangover is an innately personal experience in that everyone will feel the side effects differently or may experience only one or multiple symptoms.

That said, some symptoms are more prevalent and commonly reported than others, including: 

Brain Fog

Brain fog is one of the most common weed hangover side-effects. Science is not yet sure why this occurs. However, getting high appears to increase the blood flow to our brain and increase neural signalling

Whether this weed hangover symptom relates to bounce-back effects from blood flow changes or neural signalling is not yet clear given current evidence.

Dry Mouth

The reason why we get dry mouth, also known as cottonmouth, after smoking has always been a mystery. Until recently, that is. 

We now know that cannabinoid receptors in the mouth are activated by cannabis smoke, leading to reduced saliva production

Still, we do not know if this is why this effect occurs during a weed hangover, but it could be related. It may also relate to the next symptom.



Dehydration may occur if you’ve been smoking weed and forgetting to rehydrate by drinking water. 

That said, cannabis does appear to lower our natural water levels, making sense that a weed hangover would include some dehydration.

Dry Eyes

Some cannabis users also report dry eyes during their weed hangover. While red eyes are a normal reaction while high, it appears that all that extra blood flow can lead to some drying out the following day. 

It may also be due to cannabinoid receptors in our nasal cavity and the tunnel that connects it to our eyes. 


Headaches are another potential weed hangover effect, although people report it less commonly. However, anyone who gets them knows how unpleasant they are to experience. 

Just like with the headache that happens during an alcohol hangover, scientists do not know why it occurs.

It may have to do with the dehydration and brain fog already discussed. Generally, headaches do involve issues with blood flow. So it may have to do with reduced blood flow in the cerebral region after all that extra blood while high. 

What Causes a Weed Hangover?

As previously stated, further research is needed to understand the science behind a weed hangover and the various symptoms and potential causes. The science behind alcohol hangovers has also been very slow to identify answers. 

However, some theories have posited potential factors that may make one more susceptible to suffering from a weed hangover the next day, such as dehydration and disturbances in REM sleep

Ultimately, the most apparent cause of a weed hangover is the excessive smoking or consumption of cannabis in copious amounts extending beyond one’s normal, known tolerance level. 

However, as we also previously mentioned, physiology also plays a critical role when determining individual tolerance levels. 

Thus, these suggested contributing factors combined with over-indulgent weed practices and individual tolerance may synergistically create the side effects commonly associated with a weed hangover. 

How to Cure a Weed Hangover

Unfortunately, there is no one-stop fix when it comes to how to cure a weed hangover. However, the most promising avenue is prevention. 

When it comes to prevention, there isn’t much to say. The best thing you can do is stay within your particular tolerance level. Beyond that, staying hydrated and attempting to get a good night’s sleep may help prevent negative effects. 

That said, marijuana side effects happen, and that’s okay. Below are some tips to help you sober up from weed and alleviate the severity of some of the symptoms. 

Have Caffeine

How to cure a weed hangover

Coffee or tea is wonderful for any morning, but it can be especially beneficial during unpleasant mornings, such as those involving a weed hangover. 

Caffeine helps stimulate the mind and increase our sense of alertness, helping to alleviate brain fog and fatigue symptoms. The added energy may be just what you need to gain some motivation to be productive and cure a weed hangover. 

Stay Within Your Limit

Reducing how much cannabis you use is the best way to reduce feeling hungover. 

Be sure to manage how much THC you consume to avoid greening out and feeling the adverse effects and consequences the following day. If you use cannabis, use it responsibly. 


Since dry mouth and headaches are common symptoms associated with a weed hangover, ingesting water can be an excellent way to combat dehydration and help you cure a weed hagover. 

Drinking water is recommended in normal circumstances to have your body working at its best. This fact is even more significant when you’re anticipating ingesting a larger than average amount of cannabis, especially because many cannabis users forget to drink water while they are indulging. 

Dehydration can also lead to a variety of unpleasant effects, such as dizziness and low blood pressure. 

Beyond these tips, just take it easy. If you can take a self-care or rest day, do it. If not, take it easy on yourself and manage your expectations.

If you are a medical cannabis patient, consider seeking medical advice to help you overcome any distressing morning symptoms. The effects of medical cannabis may warrant more intense morning symptoms due to higher doses being required to address the health condition. 

Medical treatments may require adjustments to how much THC and alcohol you consume to address side effects.

Weed Hangover – Prepare & Prevent 

A weed hangover is an authentic, albeit highly preventable, event. 

While further research is necessary to study the causation of what brings this phenomenon on, anecdotal evidence posits that individual tolerance level has a significant impact on the likelihood of experiencing a weed hangover. 

In this way, users should carefully observe how their body feels during consumption as well as the morning after using cannabis to determine their specific tolerance level and when to say when for next time.

If you use weed and consume THC in the night and have felt symptoms the following morning, you likely have experienced a weed hangover even if you didn’t know that’s what it was at the time. 

When it comes to cannabis, studies cannot yet tell us everything we need to know. While we await the findings of many research studies, we will inevitably continue using cannabis. 

Thus, it is essential to be sure to study the effects of using too much so that your most recent weed hangover can be your last one. 

Stay safe, healthy and enjoy.

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