Abstract：
:Recently, interactions of herbal medicines with synthetic drugs came into focus of particular interest. In the past 3 years, more than 50 papers were published regarding interactions between St. John's wort (Hypericum perforatum L.; SJW) and prescription drugs. Co-medication with SJW resulted in decreased plasma concentrations of a number of drugs including amitriptyline, cyclosporine, digoxin, indinavir, irinotecan, warfarin, phenprocoumon, alprazolam, dextrometorphane, simvastatin, and oral contraceptives. Sufficient evidence from interaction studies and case reports indicate that SJW is a potent inducer of cytochrome P450 enzymes (particularly CYP3A4) and/or P-glycoprotein. Recent studies could show that the degree of enzyme induction by SJW correlates strongly with the amount of hyperforin found in the product. Products that do not contain substantial amounts of hyperforin (<1%) have not been shown to produce clinically relevant enzyme induction. On the other hand, some evidence suggests that hyperforin may also contribute to the antidepressant activity of SJW. However, clinical studies using SJW preparations with a low hyperforin amount (<1%) clearly demonstrated the superiority of this plant extract over placebo and its equivalence to imipramine and fluoxetine in the treatment of mild to moderate forms of depression. In the present paper clinical significant SJW interactions are critically evaluated against the background of hyperforin.
journal_name
Eur J Clin Pharmacoljournal_title
European journal of clinical pharmacologyauthors
Madabushi R,Frank B,Drewelow B,Derendorf H,Butterweck Vdoi
10.1007/s00228-006-0096-0subject
Has Abstractpub_date
2006-03-01 00:00:00pages
225-33issue
3eissn
0031-6970issn
1432-1041journal_volume
62pub_type
杂志文章,评审abstract：:The maternofetal transfer of the beta 1-selective adrenergic antagonist celiprolol has been studied in four hypertensive pregnant women. Fetal plasma concentrations were about 25-50% of the levels found on the maternal side. There was no significant difference between the plasma concentrations of the two enantiomers i...
journal_title：European journal of clinical pharmacology
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abstract：:We have studied the pharmacokinetics of fluconazole in five patients on long-term haemodialysis. The single-pass extraction rate of the dialyzer was 59 (3.5)% (n = 4), and the serum concentration was reduced by haemodialysis for 3 or 4 h by 26 (3.2)% (n = 5) and 39 (2.2)% (n = 9) respectively. The estimated amount ext...
journal_title：European journal of clinical pharmacology
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journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章,多中心研究
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journal_title：European journal of clinical pharmacology
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journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章
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journal_title：European journal of clinical pharmacology
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