Effects of Peppermint Oil in Mild-moderate Hypertension.

Last updated: January 13, 2026
Sponsor: University of Central Lancashire
Overall Status: Completed

Phase

N/A

Condition

Stress

Circulation Disorders

Williams Syndrome

Treatment

Placebo

Peppermint oil

Clinical Study ID

NCT05561543
Peppermint oil hypertension
  • Ages 18-65
  • All Genders

Study Summary

Cardiovascular and associated hypertensive diseases are the leading health burden and cause of mortality worldwide; therefore, the necessity for effective interventions is paramount. Dietary interventions to improve cardiovascular health are highly sought after as they possess less risk and financial burden than pharmacological drugs. Our previous randomized trial has shown that oral peppermint can improving systolic blood pressure and other cardiovascular/ blood lipids in healthy individuals. However, to date, no research has explored this using a placebo randomized intervention in patients with hypertension.

Therefore, the primary purpose of the proposed investigation is to test the ability of oral peppermint oil supplementation to improve cardiometabolic parameters in participants with mild-moderate hypertension.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  1. Aged from 18-65 years

  2. Systolic blood pressure 120 to 139 mmHg

  3. Not taking prescribed medicine for blood pressure management

  4. have the ability to complete written questionnaires independently

  5. Able to provide informed consent

Exclusion

Exclusion Criteria:

  1. diagnosed diabetes mellitus

  2. known cardiovascular disease or clinically significant cardiovascular comorbidity,including coronary heart disease, symptomatic heart failure, clinically significantarrhythmia, or a history of stroke or transient ischaemic attack within the previous 6 months

  3. known or suspected secondary hypertension, including renal, renovascular, orendocrine causes

  4. known clinically significant renal impairment or severe hepatic disease

  5. evidence or history of severe hypertension related target organ damage requiringspecialist management

  6. pregnant or lactating women

  7. allergy to peppermint

  8. habitual consumption of peppermint products

  9. regular consumption of antioxidant supplements

  10. body mass index larger than 40.0 kg/m²

  11. current enrolment in other clinical trials or use of other external therapies likelyto influence outcomes

  12. condition(s) likely to compromise informed consent, protocol compliance, or outcomeassessment, including severe psychiatric illness, cognitive impairment, or activesubstance or alcohol misuse.

Study Design

Total Participants: 40
Treatment Group(s): 2
Primary Treatment: Placebo
Phase:
Study Start date:
January 01, 2024
Estimated Completion Date:
August 10, 2025

Connect with a study center

  • University of Central Lancashire

    Preston, Lancashire PR4 0PE
    United Kingdom

    Site Not Available

  • University of Central Lancashire

    Preston 2639912, Lancashire PR4 0PE
    United Kingdom

    Site Not Available

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