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How Long Does Diphenhydramine Stay In Our System?
Posted on
Tue, 17 Mar 2015
Medically reviewed by
Ask A Doctor - 24x7 Medical Review Team
Tue, 17 Mar 2015
Answered on
Thu, 2 Apr 2015
Last reviewed on
Question : how long does diphenhydramine stay in your system
Brief Answer:
approximately 15.9 hours to 1 1/2 days
Detailed Answer:
HI, thanks for using healthcare magic
The half life of a drug is the time it takes for the amount of drug in the body to decrease by half.
It takes approximately 3 to 5 half lives for a drug to be completely eliminated from the body.
The half life of diphenhydramine is 5.3 hours to 11.7 hours.
This means that it would take approximately 15.9 hours to 58.5 hours ( 2 1/2 days) for it to be completely eliminated.
Many persons may have elimination midway at 1 1/2 days.
I hope this helps, feel free to ask any other questions
approximately 15.9 hours to 1 1/2 days
Detailed Answer:
HI, thanks for using healthcare magic
The half life of a drug is the time it takes for the amount of drug in the body to decrease by half.
It takes approximately 3 to 5 half lives for a drug to be completely eliminated from the body.
The half life of diphenhydramine is 5.3 hours to 11.7 hours.
This means that it would take approximately 15.9 hours to 58.5 hours ( 2 1/2 days) for it to be completely eliminated.
Many persons may have elimination midway at 1 1/2 days.
I hope this helps, feel free to ask any other questions
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar
Answered by
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