I took a 70mg Vyvanse on Saturday and have a pee test on Tuesday (tomorrow). I am very thin and have drunk a lot of water and peed a lot? Is there any way I'm gonna pass this UA???
Vyvanse is a type of amphetamine. It is a central nervous system stimulant similar to adderall. The active ingredient is Vyvanse is called lisdexamfetamine. Once inside the body it is converted dextroamphetamine.
In studies the average plasma elimination half-life of dextroamphetamine was about 12 hours after taking Vyvanse.
This means that every 12 hours, half of the previous amount of Vyvanse in the body disappears.
For example, if you took 10mg of Vyvanse at 12AM, at 12PM 5mg of Vyvanse will be left in your body. At 12AM, 2.5mg will be left, and so forth until there is 0mg left in your body.
As a rough guide it takes about 5.5 half lives for a drug to be out of your system. For Vyvanse then it would take just over 2 days for a dose to be out of your system.
(5.5 x 12 = 66 hours - which is around 2 1/2 days)
Amphetamines can usually be detected in the urine up to 48 hours after using. Detection times will vary depending on frequency and amount of use, age weight, health etc.
For more information visit: https://www.drugs.com/vyvanse.html
- Vyvanse Information for Consumers
- Vyvanse Information for Healthcare Professionals (includes dosage details)
- Side Effects of Vyvanse (detailed)
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