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Author Penttilå, O. ♦ Neuvonen, P. J. ♦ Aho, K. ♦ Lehtovaara, R.
Source British Medical Journal (The BMJ)
Content type Text
Publisher British Medical Journal Publishing Group
File Format HTM / HTML
Language English
Abstract The mean half life of doxycycline given to seven patients on long-term diphenylhydantoin treatment was 7·2 ± 0·4 hours. In five patients on long-term carbamazepine treatment the half life was 8·4 ± 1·4 hours. In four patients on combined diphenylhydantoin and carbamazepine treatment the half life was 7·4 ± 0·7 hours. All these were significantly shorter than a mean half life of 15·1 ± 1·0 hours when doxycycline was given to nine control patients. Therefore doxycycline in normal doses given to patients taking diphenylhydantoin or carbamazepine may fail to maintain the minimum inhibitory concentration necessary for proper bacteriostasis. When doxycycline is given in association with agents known to induce drug metabolism the serum concentration of the antibiotic should be watched to see that bacteriostatic levels are maintained.
Description Citation Reference: British Medical Journal
ISSN 00071447
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Learning Resource Type Article
Publisher Date 1974-06-01
e-ISSN 14685833
Journal British Medical Journal (The BMJ)
Volume Number 2
Issue Number 5917
Page Count 3
Starting Page 470
Ending Page 472


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Source: British Medical Journal (The BMJ)