How to Flush Marijuana Out of Your System

Updated May 6, 2022
Rolling a joint

Though there are many ideas that are thought to help flush marijuana out of your system, few of these methods have been proven with scientific research. Regardless, many people try to rid the body of THC, the chemical component of marijuana that is stored in your fat cells.

If you are looking to try some strategies that may help speed the process of a THC detox, most of the suggestions will not harm you and may actually help improve your health.

Can You Sweat Out THC?

One of the most popular methods that people use to try to get rid of THC is through sweat. Sweating out THC may involve extreme exercise, a sauna, a steam room, or a sweat lodge. Sweating is one method the body uses to rid itself of toxins. Some people believe that since THC is detectable in sweat, producing more sweat can help your body get rid of THC.

Early clinical studies have shown that 9-tetrahydrocannabinol or THC is detectable in human sweat when people use marijuana. These studies also show that the amount of THC in sweat diminishes a few weeks after use is discontinued. So it would not be unreasonable to believe that by increasing your sweat production, you can increase the rate at which your body excretes THC. Unfortunately, however, the science doesn't necessarily support this claim.

For instance, a study conducted in a drug detoxification center examined whether sweat-inducing exercise or food deprivation might help the body rid itself of THC. The study was small in scope (involving just 6 participants) but researchers were not able to find that either approach helped reduce levels of the drug in urine.

Keep in mind, that sweating excessively can cause symptoms such as lightheadedness or dizziness. If you are already feeling these effects from marijuana use, using a sauna, steam room, or sweat lodge may not be safe. In general, the use of these tools is not recommended if you are under the influence of alcohol or drugs.

More Ways to Flush Marijuana Out of Your System

Some of the most common methods thought to help flush marijuana out of your system include drinking fluids, eating a healthy diet, herbal supplements, exercise, niacin, and allowing enough time to pass.

Drink Fluids

Increasing your fluid intake could help. While it is not known if water will help expedite flushing out THC, the excess water can dilute the metabolite count in your system.

Sometimes, creatine is recommended as a supplement for this method because creatine levels are lowered when too much water is consumed. And in some settings, researchers have found that using creatine can help identify new cannabis users. But scientific evidence showing that creatine can help your body get rid of THC is lacking.

Lastly, drinking certain juices can help you to rehydrate and provide your body with micronutrients. Cranberry juice is sometimes used in detoxification programs as an agent for cleansing the body.

Eat Healthy

Eat more vegetables and stay away from fatty foods. High-fat foods make the digestive system less effective, which can inhibit the detoxification process. Vitamins and minerals found in vegetables also help support good digestive health and help your body's natural detoxification systems work better.

Try Herbal Supplements

Some herbal supplements are used to enhance the detoxification process, such as psyllium seeds, milk thistle, and cayenne. Scientific evidence supporting their use is lacking but you'll find plenty of anecdotal reports online. Be sure to take supplements with care. Check with your healthcare provider if you are on any medications or if you have a medical condition that can enhance the side effects of supplements.

Green tea or an herbal tea can also be used as detoxifiers. These compounds support the liver in detoxifying the body of chemical substances, as well as aiding with elimination. While these supplements are great for your health and improving your health can aid the detoxification process, they will most likely not help you speed up the time it will take for your body to be rid of the THC stored in your system.


Because THC is stored in fat cells, it is believed burning fat through heavy aerobic exercise, such as jogging or fast walking, biking, or swimming laps, will help the body process and release THC stored in your fat cells. Exercise will also encourage you to consume more water after heavy workouts. However, limit exercise for at least 24 hours before your test. Some sources say that exercise can cause a spike in THC metabolite levels, although the fact is not supported by clinical evidence. If you have short notice, skip this detox method. Have a week or more before your drug test? Exercise might help.


Some people find taking the over-the-counter vitamin niacin is helpful in flushing out the body. Niacin, or vitamin B3, is a supplement that improves skin health and the nervous system and promotes your metabolism to work harder. However, niacin should be used with caution since it has side effects including itching, rash, nausea, and vomiting.


A lit joint

Because the body stores THC in the fat cells, clearing it out takes time. According to some sources, between seven and 100 days, depending on the amount of usage. Your body will cleanse itself naturally once you stop smoking pot.

Mid-Stream Urine Sample

Some experts advise that you don't give the sample from the beginning or end of your urine stream. There will be fewer THC metabolites mid-stream. If you have a choice to provide the sample later in the day as opposed to first thing in the morning, do that.

The 4 Quickest Methods to Get Rid of THC

There are several ways to get marijuana out of your system, but sometimes you need something that works fast. Some companies offer products that claim to rid your body of THC. According to their claims, the quickest methods are:

Detox Kits

Products like TestClear say that they can help flush marijuana out of your system fast. They also offer cleansing drinks, shampoos, and detoxes of various lengths (ranging in price from around $40.00 to just under $200.00) to help you pass a urine test.

These kits are a mix of herbs, minerals, and vitamins that work to push the traces of THC out of your body so you'll be able to pass a blood, saliva, or urine test. Though they have some kits that take as little as one to three days, keep in mind, these kits are for those who only have light to moderate exposure to marijuana. The more exposure you've had, the longer it will take to detox.

Ultra Clear Shampoo is an option if you have a hair test and costs about $40.00. It has good reviews and you'll have the option to purchase your own hair testing kit for an additional fee of around $60.00 to $90.00).

Dilution recommends dilution, which combines drinking lots of water with creatine or B vitamins (niacin). Admittedly, there's no guarantee this will flush all traces out of your body, but it's worth a try. You can use this in combination with other methods.

Fruit Pectin

This is another recommendation. This works by preventing the THC from passing into your blood, saliva, or urine. Similar to the psyllium husk in the list above, the fiber here encourages the THC to leave your body via bowel movement.

Clean Up Your Diet

Eat lots of fiber, leafy greens, fruits, and vegetables, but stay away from junk food, red meat, foods high in sodium, and sugar. These can slow down the detox process.

Flush Marijuana for Good

There is a lot of debate on how to flush marijuana from your body, and what methods work best. Usually, the sense of urgency is due to an upcoming, short notice drug test. However, the only surefire way to make sure there's no marijuana in your system is to not engage in using it at all. Speak to a medical professional before trying any of the above methods in an attempt to detoxify your body.

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