How Long Does Laughing Gas Last (And Why)?

Exact Answer: 3-5 Minutes

Only when the mask from your face is removed then the effects of laughing gas might last for about 3-5 minutes only. Many people often get confused about how long the effects of laughing gas stay because they think that the effect lasts much longer than 3-5 minutes but that is not the case at all. In other terms, laughing gas is also known as nitrous oxide. One of the effects of inhaling laughing gas is that it will give you a slight feeling of tingling sensation.



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Other than that a person might feel light-headed and numbness throughout the whole body. The gas is used for medicinal purposes especially by dentists when they are conducting some treatments. Laughing gas helps the doctors to conduct their treatment easily to their patients. However, you must know that laughing gas is a safe gas that is used for anaesthetic purposes.

How Long Does Laughing Gas Last

How Long Does Laughing Gas Last?

Laughing GasLasts For
Nitrous Oxide (Chemical name of laughing gas)3-5 minutes
Used by DoctorsThe dose could be increased accordingly

Laughing gas lasts for about 3-5 minutes only. However, the sedation could be increased or decreased easily by the practitioner or by the doctors. Laughing gas has got many advantages because the gas is suitable for all kinds of people. People suffering from a serious illness can take laughing gas before any kind of treatment.

Laughing gas is used for anaesthetic purposes so that doctors could perform their activities on their patients easily. However, the anaesthetic effect of laughing gas will not put you to sleep but it will only numb your body parts. The patient can speak and communicate while they are given a sedative of laughing gas.

Laughing gas is given to the patients by putting a mask of nitrous oxide on them. Patients need to inhale the gas and soon after the mask is opened the effects of laughing gas start. The gas is mixed with oxygen too when it is given to the patients. The process is quite easy because the patients only need to breathe the gas that is emitted from the mask they are given by the doctors.

Why Does It Take That Long For Laughing Gas To Last?

Laughing gas could be inhaled by anyone before any kind of treatment. There are no side effects because every organ will stay fit even after the gas is provided to the patients. So, there is nothing to worry about whenever you are given laughing gas.

The mask that emits the gas is inhaled by the patient and soon after the mask is removed the effects of laughing gas decreases slowly by inhaling and exhaling normal air. It is just a matter of few minutes when the patient will begin to feel normal.

The gas is a safe anaesthetic option because there is no harm caused to the body while using it up on the patients. However, everything should be handled carefully by a professional because you don’t want any mistake to happen during the whole process.

However, some other things like falling off while standing too quickly are the real dangers here because the patient needs to take some time either standing or in some kind of resting position before moving. The effects of laughing gas might force them to fall which might cause another kind of injury to them. But, there is nothing to worry about because waiting for only 3-5 minutes will make the body normal just like before inhaling the gas.


The whole procedure of laughing gas might be easy for doctors to use while treating their patients but it must be handled carefully. Doctors should know how to use these things because there could be situations arising that you have never experienced before. But, that is only the rarest of cases because laughing gas is suitable for everyone and there are no side effects of it.

The gas will not give you any kind of hangover effects because the effects only last for few minutes. Do not try to take it on your own because one should be careful about medical things and other things related to health. After treatments, you can drive yourself home safely because you won’t feel anything of the side effects.  


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