Study to Investigate the Potential Health Benefits of Grapes Seeds Extract Supplementation in the Management of Elevated Blood Pressure or Stage 1 Hypertension

Liaquat University of Medical & Health Sciences

Status: Begins enrollment this month

Conditions: Hypertension; Elevated Blood Pressure

Treatments: Dietary Supplement: Enovita® (Grape Seed Extract); Other: Placebo Capsule

Study type: Interventional

Funder types: Other

Identifiers

NCT06982365

LUMHS/REC/-734/12.05.2025

Details and patient eligibility

About

This study is a pragmatic, randomized, double-blind, placebo-controlled trial aimed at evaluating the potential health benefits of Enovita® (standardized grape seed extract) supplementation in adults with elevated blood pressure or Stage 1 hypertension. The primary objective is to assess the impact of Enovita® on systolic and diastolic blood pressure over 8 weeks. Secondary outcomes include changes in mood, emotional well-being, perceived stress, lipid profile, and systemic inflammation. The study will also monitor the safety and tolerability of Enovita®.

Full description

Hypertension is a major risk factor for cardiovascular diseases, and its early management is crucial. Grape seed extract is a natural polyphenol-rich supplement that may offer antihypertensive benefits through its antioxidant, anti-inflammatory, and vasodilatory properties. This study aims to investigate the effectiveness of a standardized Grape seeds extract, Enovita® in reducing blood pressure in adults with elevated blood pressure or Stage 1 hypertension.

This is a pragmatic, randomized, double-blind, placebo-controlled trial involving two groups: the Enovita® group receiving 150 mg of Enovita® twice daily and the placebo group receiving matching placebo capsules. The intervention will last for 8 weeks. Participants will be assessed at baseline, 4 weeks, and 8 weeks.

The primary outcome is the change in systolic and diastolic blood pressure from baseline to 8 weeks. Secondary outcomes include changes in mood (PANAS and WEMWBS scores), perceived stress (PSQ-20 score), lipid profile (total cholesterol, LDL, HDL, triglycerides), and systemic inflammation (hs-CRP levels). Safety will be monitored through adverse event reporting and regular health assessments.

This study will provide insights into the potential of Enovita® as a natural intervention for managing mild hypertension and improving emotional well-being.

Enrollment: 60 estimated patients

Sex: All

Ages: 30 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Adults aged 30 to 65 years.
• Diagnosed with Elevated Blood Pressure (systolic 120-129 mmHg and diastolic <80 mmHg) or Stage 1 Hypertension (systolic 130-139 mmHg or diastolic 80-89 mmHg), according to American Heart Association guidelines.
• No use of antihypertensive medication in the past 3 months.
• Willing to comply with study procedures and follow-up visits.
• Able to provide written informed consent.

Exclusion criteria

• Stage 2 Hypertension (systolic BP ≥140 mmHg or diastolic BP ≥90 mmHg) at screening.
• Chronic kidney disease (eGFR < 60 mL/min/1.73 m²).
• Diabetes mellitus (HbA1c ≥ 6.5%).
• History of cardiovascular events (myocardial infarction, stroke) in the past 6 months.
• Known allergy to grape products.
• Current use of polyphenol supplements or similar herbal products.
• Pregnancy or breastfeeding.
• Participation in another clinical trial within the last 30 days.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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60 participants in 2 patient groups, including a placebo group

Enovita® Group (Grape Seed Extract)

Experimental group

Description:

Participants in this group will receive Enovita®, a standardized grape seed extract. Each participant will take 150 mg of Enovita® orally, twice daily (total daily dose: 300 mg) for a duration of 8 weeks.

Treatment:

Dietary Supplement: Enovita® (Grape Seed Extract)

Placebo Group

Placebo Comparator group

Description:

Participants in this group will receive a matching placebo capsule, identical in appearance to the Enovita® capsule. Each participant will take one placebo capsule orally, twice daily, for a duration of 8 weeks.

Treatment:

Other: Placebo Capsule