Sacha Inchi-CoQ10 Supplementation and Cardiovascular Health (Sacha-Q10)

This is a 12-week, randomized, double-blind, placebo-controlled clinical trial evaluating Sacha-Q10 Plus, a combined Sacha Inchi and Coenzyme Q10 (CoQ10) supplementation, among adults with increased cardiovascular risk or stable cardiovascular disease. The study will be conducted at Hospital Sultan Abdul Aziz Shah (HSAAS), Universiti Putra Malaysia, with participant recruitment carried out primarily through the Family Medicine Clinic.

Sacha Inchi (Plukenetia volubilis) is a natural source of essential fatty acids, particularly omega-3 fatty acids such as alpha-linolenic acid (ALA), as well as omega-6 and omega-9 fatty acids. Coenzyme Q10 is a mitochondrial antioxidant involved in cellular energy production and antioxidant defence. The combination is proposed to target multiple pathways involved in cardiovascular disease, including oxidative stress, inflammation, endothelial dysfunction, and cardiometabolic abnormalities.

Participants will be randomly assigned in a 1:1 ratio to receive either Sacha-Q10 Plus supplementation or a matching placebo. The intervention group will receive two softgels daily for 12 weeks. The intervention and placebo will be identical in appearance and packaging to maintain blinding among participants, investigators, and outcome assessors. Participants will be advised to maintain their usual diet and physical activity and to continue their prescribed medications without modification unless otherwise directed by their physician.

Study assessments will be conducted at screening, baseline (week 0), week 6, and week 12. Assessments will include clinical measurements, fasting blood sampling, blood pressure measurement, body composition assessment, and transthoracic echocardiography. Blood samples will be used to assess routine biochemical parameters, inflammatory biomarkers, and oxidative stress markers. Body composition will be assessed using bioelectrical impedance analysis, including phase angle measurement.

At the week 6 visit, participants will undergo interim safety and compliance monitoring, including assessment of adverse events, capsule counts, participant diaries, selected biochemical parameters, body composition, and blood pressure. At week 12, the baseline assessments will be repeated to evaluate changes following the intervention period. Dietary intake, physical activity, and health-related quality of life will also be assessed during the study period.

Compliance will be assessed through capsule counts and participant diaries. A compliance rate of at least 80% will be considered acceptable for inclusion in the per-protocol analysis. Safety and tolerability will be monitored throughout the study through active questioning, participant self-reporting, adverse event documentation, and clinical laboratory assessments, including renal and liver function tests. Adverse events will be documented according to their onset, duration, severity, frequency, outcome, and relationship to the study intervention. Serious adverse events will be reported and managed according to applicable institutional and regulatory requirements.

Data will be analysed according to the intention-to-treat principle, with per-protocol analysis conducted as a sensitivity analysis. Appropriate statistical methods will be used to compare outcomes between the intervention and placebo groups, including analysis of covariance for post-intervention comparisons and linear mixed-effects models or repeated measures analysis for outcomes assessed at multiple time points.