Amphetamines are strong central nervous system stimulants, used to treat attention deficit and hyperactivity disorder (ADHD), as well as narcolepsy and obesity in some cases. It also has widespread use as a euphoric drug and is used to ‘get high’.
Dextroamphetamine has a half life duration between 10 to 12 hours. Keeping in mind that most drugs exhibit 5.5 half-lives, dextroamphetamine or d-amphetamine will be excreted from the system between 2 days 7 hours and 2 days 18 hours after administration.
Levoamphetamine has an elimination half-life between 11 to 14 hours; as a result this isomer will take between 2 days 12.5 hours to 3 days 5 hours to be eliminated from the system.
So, it can be concluded that amphetamines and its isomers will be cleared from the system within 77 hours after the last dose.
How long are amphetamines (speed) detectable in urine, blood, saliva and hair follicle drug tests
|Up to 12 hours
|Hair Follicle Test
However, these numbers don’t turn up the same for every individual. The dosage of the administered amphetamine and the frequency thereof are important factors.
Individual factors that decide on how long you will have speed in your system include age, liver and kidney conditions, food intake and hydration levels, urinary pH and gastrointestinal pH levels, genetics and metabolic rate.
Increased exercise as well as food and water intake, using activated charcoal are all things that you can do to eliminate speed at a speedier rate. Also, acidifying your urine by ingesting edibles like nuts, blueberries, cranberries and vinegar-rich foods is another surefire way to get that negative result in the upcoming drug test.
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