SynthesisSupportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer2021
The use of guarana (Paullinia cupana) as a dietary supplement for fatigue in cancer patients: a systematic review with a meta-analysis.
Synthesis in Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 2 of them syntheses that pooled it.
What it found
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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.
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Who cites it
7 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Natural supplementation to effectively treat cancer-induced fatigue: evidence of a meta-analysis on the use of guaraná.Revista da Associacao Medica Brasileira (1992) · 2024Pooled it
- Effect of Guarana (Nutrients · 2023Pooled it
- Nutrition and Dietary Patterns: Effects on Brain Function.Nutrients · 2025Article
- Efficacy and safety of traditional Chinese medicine for cancer-related fatigue: a systematic literature review of randomized controlled trials.Chinese medicine · 2023Review
- Management of Fatigue in Patients with Advanced Cancer.Current treatment options in oncology · 2023Review
- Alterations in Bacterial Metabolism Contribute to the Lifespan Extension Exerted by Guarana inNutrients · 2022Article
- The Role of Complementary and Alternative Medicine on Cancer-Related Fatigue in Adults: An Overview of Systematic Reviews.Integrative cancer therapiesReview
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe objective of the present study was to carry out a systematic review with a meta-analysis to assess evidence about the use of guarana fruit to manage fatigue in cancer patients. METHODOLOGY: The data were extracted from the EMBASE, Scopus, MEDLINE, CENTRAL, and CINAHL databases, in any language, using the descriptors "neoplasms" and "Paullinia" or "guarana powder" and "placebos" and "fatigue". Searches were also conducted to identify any grey literature. Clinical studies with patients who presented cancer-related fatigue as a primary outcome and who used guarana as a dietary supplement were included. The risk of bias in randomized clinical trials was analyzed according to the Cochrane recommendations. The quality of the evidence was assessed using the GRADE system. For studies with the same types of tumors and treatments, meta-analysis was also conducted.
resultsA total of 383 studies were found and, of these, seven were included in the review, for a total of 427 cancer patients. The instruments used to analyze fatigue were the Brief Fatigue Inventory (BFI), the Chalder Fatigue Scale, the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-FATIGUE), and the Piper Scale. Some studies presented a low risk of bias for all the categories. Meta-analysis was conducted for three studies about breast cancer, which presented sufficient data. The use of guarana did not reduce cancer-related fatigue compared with placebo groups (mean of - 0.02 [95% CI - 1.54, 1.50]; p = 0.98) and the quality of evidence according to GRADE was very low.
conclusionDietary supplements are used to improve cancer-related fatigue. The results of this review showed that the use of guarana was not superior to the placebo groups, pointing to the need for further studies with better methodological quality.
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