23 Aug 2009
The eilimination half life of doxycycline is between 16 to 22 hours (for healthy adults).
It takes 5.5 x elimination half life (hours) before a drug is completely cleared from your system.
So if we take the maximum elimination half life of 22 hours, it would take 121 hours i.e. approximately 5 days (5.5 x 22 hours) before the medicine is eliminated from your system.
- Doxycycline Information for Consumers
- Doxycycline Information for Healthcare Professionals (includes dosage details)
- Side Effects of Doxycycline (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Im assuming long term use will have adverse effects on my body...
1 answer • 26 Aug 2010
I have been using doxycycline hyclate for acne and was wondering how long does it stay within my system once I stop taking it? I need to know so that ...
1 answer • 30 Sep 2011
I was prescribed doxycycline 100mg 2x daily for 7 days. I took my last dose in the morning on Thursday Oct 31st. My fertile/ovulation time is between ...
1 answer • 1 Nov 2013
How long should I take dermatologist-prescribed doxycycline hyclate 100 mg for possible Lyme Diseas?
My dermatologist removed a tick I had for approx. 2 weeks and prescribed 40 tablets of doxycycline taken twice a day. I am going out of the country. ...
1 answer • 25 Jul 2014