The Acute Effect of Chamomile Intake on Blood Coagulation Tests in Healthy Volunteers: A Randomized Trial.
J Appl Lab Med
; 9(3): 468-476, 2024 May 02.
Article
in En
| MEDLINE
| ID: mdl-38300838
ABSTRACT
BACKGROUND:
Chamomile administration may have desirable effects in the perioperative setting. Current practice, however, discourages perioperative chamomile use due to a theoretical increase in bleeding. Therefore, we evaluated if chamomile acutely (within 4 h of ingestion) prolongs coagulation assays.METHODS:
Eight healthy volunteers were randomized to receive 2 interventions in a crossoverdesign:
(a) single dose of chamomile extract capsule (500â mg) and (b) single dose of chamomile tea (3â g in 150â mL water). Interventions were separated at least 3 days apart from each other. Blood was sampled pre-ingestion, 2 h post-ingestion, and 4 h post-ingestion for each intervention. The primary outcome was the maximal change in prothrombin time (PT) before vs after each intervention. Secondary outcomes included changes in international normalized ratio, activated partial thromboplastin time, thrombin time, reptilase time, and fibrinogen levels.RESULTS:
All 8 subjects completed the study. The average pre-ingestion PT values for tea and capsules were 11.9 (1.1) s and 12.0 (0.9) s, respectively. Tea significantly increased the average maximum PT by 0.7 (0.2) s (P = 0.0078). Extract capsules increased the maximum PT by 0.3 (0.2) s (P = 0.06). Neither PT prolongation met the predefined 10% threshold for clinical significance. No significant changes in secondary outcomes were observed.CONCLUSIONS:
Chamomile tea ingestion prolongs PT. However, the clinical significance of this is unclear at this time and warrants further investigation. ClinicalTrials.gov Registration Number NCT05272475.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Prothrombin Time
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Blood Coagulation
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Plant Extracts
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Cross-Over Studies
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Chamomile
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Healthy Volunteers
Type of study:
Clinical_trials
Limits:
Adult
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Female
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Humans
/
Male
Language:
En
Journal:
J Appl Lab Med
Year:
2024
Document type:
Article
Affiliation country:
Country of publication: