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How Long do ‘Shrooms Stay in Your System

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  • 8th December 2023

What are shrooms

Shrooms, or ‘magic mushrooms’, are mushrooms with an active psychoactive compound known as ‘psilocybin.’ It is found in nature and has widespread use as a psychedelic and hallucinogenic drug.



How long does shroom stay in your system

How long shrooms will stay in your system depends on various factors like the species of shroom taken, mode of administration (oral or intravenous), and whether any other drugs are being co-administered that may expedite or slow down the process of metabolism.

For oral administration: Orally ingested psilocybin is believed to have a half-life of around 163 minutes. Keeping in mind the 5.5 half-life rule, it can be inferred that psilocybin derived from orally ingested shrooms, will be eliminated from the body within 15 hours.

For intravenous administration: Psilocybin, when administered intravenously, has a shorter half-life of around 74 minutes, requiring around 6.8 hours to be cleared from your system.

The metabolite of psilocybin, psilocin has a half-life of around 50 minutes. It will be excreted from the system around 4.58 hours after administration. It is understood, therefore, both the main ingredient psilocybin and it primary metabolite psilocin, will be eliminated from your system within no more than 20 hours.

Individual factors like the age of the user, body mass, metabolic rate, liver and kidney functionality, genetics, food intake, hydration levels, and urinary pH also play a deciding role in the excretion.

Do shrooms show up on a drug test

The active compound of the drug, psilocybin and its metabolite, psilocin, are indeed detectable in urine and blood samples.

This should not be a cause for concern, though, as they are hardly ever looked for in standard drug tests, usually conducted to look for marijuana, heroin, cocaine/crack, amphetamines, and PCP.

Drug tests done for positive detection of psilocybin and psilocin are often too expensive, and employers generally refrain from using such tests for newly hired employees.


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