Subjects will be enrolled into three groups in a crossover fashion upon obtaining written informed consent. Baseline laboratory screening assays of anticoagulation will be obtained. The three intervention groups include (1) chamomile tea intake, (2) chamomile extract intake and (3) placebo capsules. Subjects will consume the chamomile or placebo preparations for one week and partake in a one-week washout period between interventions. Screening assays of coagulation will be obtained immediately before and after each intervention week.
Chamomile may possess anticoagulant effects based on the presence of coumarin-like compounds within the flower. This randomized, placebo-controlled complete crossover study will investigate the impact of chamomile ingestion on coagulation.