I took one 0.5mg lorazepam and will be taking a urine test. How long until this is out of my system? Please help,
Lorazepam has an elimination half-life of 12 to 18 hours. The half life is used to estimate how long it takes for a drug to be eliminated from the body. Generally it takes 5.5 half-lives for a drug to be removed from the body, when it is deemed to no longer have an effect.
Therefore for lorazepam if you use 18 hours, it would take approximately 99 hours (5.5 x 18 hours) which is approximately 4 days to be removed from the body.
Elimination of a drug varies from person to person due to factors like age, weight, other medications taken, or other medical conditions present, also kidney function, liver function etc. Therefore half life is used as a guide or an estimate of how long it may take for the drug elimination.
I've had an instance where I took one 0.5mg Xanax, which is also a benzodiazepine, and it showed up 6 weeks later in a urine drug screen. Hopefully it will be gone in the seven days for you but be forwarned that it could be longer. Benzos are one drug that can stay in the system a long time.
- Lorazepam Information for Consumers
- Lorazepam Information for Healthcare Professionals (includes dosage details)
- Side Effects of Lorazepam (detailed)
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