Fig. 2

Randomized order of interventions and laboratory sampling time points. Letters “A,” “B,” and “C” represent the three interventions (A = chamomile tea, B = chamomile capsule, and C = placebo capsule), therefore, there were 6 possible orders of interventions that subjects could be randomized to. A screening sample was collected within 72 h prior to initiation of the first study intervention (week 1). Subsequent blood samples were obtained before and after completing each 7-day (i.e., weeklong) intervention