Evidence map›Paper›PMID 21253716›Full record

ArticleEuropean journal of clinical pharmacology2011

Pharmacodynamic and pharmacokinetic drug interactions reported to VigiBase, the WHO global individual case safety report database.

Johanna Strandell, Stina Wahlin

Open access · goldAbstract read
PubMed Publisher
In one paragraph

Article in European journal of clinical pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 3 pooled it
2.3field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 3 syntheses or guidelines pooled it, 49 citations in OpenAlex.

  1. Pooled it
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  4. Biological sex differences in pharmacokinetics and adverse drug reactions.Naunyn-Schmiedeberg's archives of pharmacology · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 1 country.

Johanna StrandellUppsala Monitoring Centre, WHO Collaborating Centre for International Drug Monitoring, Box 1051, 751 40 Uppsala, Sweden. Johanna.Strandell@who-umc.org
Stina Wahlin
Linköping University · SEUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveDrug interactions resulting in adverse drug reactions (ADRs) represent a major health problem both for individuals and the community. Despite this, limited information is reported in the literature on the drug interaction categories responsible for causing ADRs. In the study reported here, we investigated the drug combinations most frequently co-reported as interacting in the WHO Global Individual Case Safety Report (ICSR) database, VigiBase, and categorised these according to the drug interaction mechanism.

methodsReports in which drug combinations were co-reported as interacting in at least 20 reports in VigiBase during the past 20 years were included in the study. Each drug combination was reviewed in the literature to identify the mechanism of interaction and subsequently classified as pharmacodynamic and/or pharmacokinetic reaction. Report characteristics were also analysed.

resultsA total of 3766 case reports of drug interactions from 47 countries were identified. Of the 123 different drug combinations reported, 113 were described in the literature to interact. The mechanism of the drug interaction was categorised as pharmacodynamic (46 combinations; 41%), pharmacokinetic (28; 25%), a combination of both types (18; 16%) and unidentified (21; 19%). Pharmacodynamic drug interactions primarily concerned pharmacological additive effects, whereas enzyme inhibition was the most frequent pharmacokinetic interaction. The combinations reviewed primarily implicated drugs such as warfarin, heparin, carbamazepine and digoxin.

conclusionsDrug interactions reported in globally collected ADR reports cover both pharmacodynamic, specifically additive pharmacological effects, and pharmacokinetic mechanisms primarily accredited to the inhibition of hepatic cytochrome P450 enzymes. These ADR reports often concern serious threats to patients' safety and are particularly related to the use of high risk drugs such as warfarin and heparin.

Indexed as

Adverse Drug Reaction Reporting SystemsDrug InteractionsDrug-Related Side Effects and Adverse ReactionsPharmacovigilanceWorld Health OrganizationDatabases, FactualDrug Therapy, CombinationFemaleHumansMalePharmacokineticsPharmacological PhenomenaPolypharmacyRisk

Identifiers

PMID21253716
OpenAlexW2039148553

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.