Premium
Comparison of plasma and saliva levels of metoprolol and oxprenolol.
Author(s) -
Dawes CP,
Kendall MJ,
John VA
Publication year - 1978
Publication title -
british journal of clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.216
H-Index - 146
eISSN - 1365-2125
pISSN - 0306-5251
DOI - 10.1111/j.1365-2125.1978.tb01627.x
Subject(s) - oxprenolol , saliva , metoprolol , chemistry , endocrinology , plasma concentration , medicine , plasma levels , biochemistry , propranolol
1 Plasma and saliva levels of metoprolol and oxprenolol have been compared in two groups of healthy volunteers. 2 Mean salivary oxprenolol levels were lower than, but closely related to the corresponding plasma levels (r=0.93), the mean ratio of saliva:plasma concentration being 0.42. 3 Mean salivary metoprolol concentrations were considerably greater thatn the corresponding plasma levels and the relationship between the concentrations in the two fluids was less clear. 4 The evidence presented suggests that oxprenolol diffuses passively whilst metoprolol is actively secreted into saliva. The mechanism involved in the active process is not known.