NCT04491461

Acute Effects of an Herbal Tea on Immune Surveillance and Activation.

Acute Effects of an Herbal Tea Blend on Immune Surveillance and Activation Status of Natural Killer Cells.

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 12 (actual)
• Sponsor: Natural Immune Systems Inc · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Accepted

Summary

A small cross-over trial on 24 people involving an herbal tea blend to test whether consuming 1 cup of tea triggers changes in the numbers of natural killer cells in the blood circulation as evidence of immune cell trafficking within 2 hours.

Detailed description

A randomized, cross-over, controlled study design will be used to evaluate the effects of consumption of 1 cup of an herbal tea blend to consumption of the same volume of warm water. The study is of 3 weeks' duration, with evaluation of the herbal tea blend versus warm water at week 1 and week 2 with a one week washout between visits. On each visit, a baseline blood draw is performed, followed by consuming of the herbal tea blend or warm water. Blood draws are performed at 1 and 2 hours after consumption.

Conditions

• Active Immune Response

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Herbal tea blend	1 cup of freshly brewed tea from an herbal tea blend.
DIETARY_SUPPLEMENT	Warm water	1 cup of warm water

Timeline

• Start date: 2020-07-27
• Primary completion: 2021-10-25
• Completion: 2021-12-19
• First posted: 2020-07-29
• Last updated: 2022-09-27

Locations

1 site across 1 country: United States