Evidence map›Paper›PMID 20590478›Full record

Trial reportJournal of alternative and complementary medicine (New York, N.Y.)2010

A randomized clinical trial of St. John's wort for smoking cessation.

Amit Sood, Jon O Ebbert, Kavita Prasad, Ivana T Croghan, Brent Bauer, Darrell R Schroeder

Registry-linked trialAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of alternative and complementary medicine (New York, N.Y.), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00405912 (St. John's Wort for Tobacco Cessation), which is not on this map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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.

NCT00405912 phase2completednot on this map

St. John's Wort for Tobacco Cessation

TypeinterventionalSponsorMayo ClinicRan2005 to 2008Enrolled118ConditionsSmoking, Nicotine DependenceArmsPlacebo, St. John's Wort-900 mg/day, St. John's Wort-1800mg/day
3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Antidepressants for smoking cessation.The Cochrane database of systematic reviews · 2020
    Pooled it
  2. Antidepressants for smoking cessation.The Cochrane database of systematic reviews · 2014
    Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Antidepressants for smoking cessation.The Cochrane database of systematic reviews · 2023
    Review
  7. Review
  8. Review
  9. Plants with Anti-Addictive Potential.Advances in experimental medicine and biology · 2021
    Article
  10. Article
  11. Article
  12. Review
  13. Article
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

6 authors.

Amit SoodMayo Clinic College of Medicine, Rochester, MN 55905, USA.
Jon O Ebbert
Kavita Prasad
Ivana T Croghan
Brent Bauer
Darrell R Schroeder

Funding

St. John's Wort for tobacco cessationR21CA119814 · NCI · MAYO CLINIC ROCHESTER · PI SOOD, AMIT · 2005 to 2006
$438k
NCI NIH HHS CA119814
6 · The paper itself

Abstract

introductionSt. John's wort (SJW) is a widely used herbal supplement. The predominant mechanism(s) accounting for the activity of SJW in vivo are, however, unclear. The purpose of this study was to investigate the efficacy of SJW for smoking cessation.

methodsWe conducted a randomized, blinded, placebo-controlled, three-arm, dose-ranging clinical trial. A total of 118 subjects were randomly allocated to receive SJW 300 mg, 600 mg, or a matching placebo tablet 3 times a day combined with a behavioral intervention for 12 weeks. Self-reported smoking abstinence was biochemically confirmed with expired air carbon monoxide.

resultsMean age of the study participants was 37.6 +/- 12.4 years; they smoked an average of 20.0 +/- 6.6 cigarettes per day for 20 +/- 12.1 years. The study dropout rate was high (43%). By intention-to-treat analysis, no significant differences were observed in abstinence rates at 12 and 24 weeks between SJW dose groups and placebo. SJW did not attenuate withdrawal symptoms among abstinent subjects. Abstinence rates did not differ by study group among subjects who took at least 75% of their study medication. No significant side-effects were noted with SJW.

conclusionsIn this randomized trial, SJW did not increase smoking abstinence rates. Our data, in combination with data from other studies, suggest that SJW has little role in the treatment of tobacco dependence.

Indexed as

HypericumPhytotherapyAdolescentAdultAgedCarbon MonoxideFemaleFlowersHumansIntention to Treat AnalysisMaleMiddle AgedNicotinePlant ExtractsSingle-Blind MethodSmokingCarbon MonoxideNicotinePlant Extracts

Identifiers

PMID20590478
PMCPMC3110810

What OpenQuestion holds

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Registered trials

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.