Coronary Artery Disease (CAD)

Coronary artery disease (CAD; sometimes called coronary heart disease, or CHD) is a common kind of heart disease caused by atherosclerosis of the heart’s arteries. Diet and exercise can play a pretty big role to both prevent and treat it. Smoking, family history, high blood pressure and high cholesterol are major risk factors.

Quick Answer

What it is

Coronary artery disease (CAD; sometimes called coronary heart disease, or CHD) is a common kind of heart disease caused by atherosclerosis of the heart’s arteries. Diet and exercise can play a pretty big role to both prevent and treat it.

Key findings

  • Grade B: C-Reactive Protein (CRP) (Probiotics)
  • Grade C: Blood glucose (Flaxseed)
  • Grade C: Anti-Oxidant Enzyme Profile (Coenzyme Q10)

Safety

  • Smoking, family history, high blood pressure and high cholesterol are major risk factors.
ℹ️ Quick Facts

Quick Facts: Coronary Artery Disease (CAD)

  • Supplements Studied:24
  • Research Trials:38
  • Total Participants:56,497
  • Top Supplement:Probiotics (B)
38 trials
56,497 ppts
24 supps · 182 outcomes

Evidence-Based Protocol

Supplement stack ranked by research quality

Moderate Evidence

Primary Stack (Tier 1)

2-4g EPA/DHA daily

Reduces triglycerides, inflammation, platelet aggregation, and arrhythmia risk in established CAD

40 studies | 135,000 participants
100-300mg daily

Supports mitochondrial ATP production in cardiac muscle and provides antioxidant protection

25 studies | 2,500 participants

Supporting Stack (Tier 2)

300-400mg daily

Supports endothelial function, reduces blood pressure, and helps maintain normal heart rhythm

22 studies | 1,200 participants
100-200mcg MK-7 daily

Activates matrix Gla protein, directing calcium away from arteries and reducing vascular calcification

12 studies | 800 participants

How It Works

Coronary artery disease (CAD) develops when plaque builds up in the arteries supplying the heart, reducing blood flow and increasing heart attack risk. While medications and lifestyle changes are the foundation of treatment, certain supplements can provide additional cardiovascular protection.

Omega-3 Fatty Acids (fish oil) have multiple heart benefits: they lower triglycerides, reduce inflammation, decrease platelet stickiness, and stabilize heart rhythm. The landmark REDUCE-IT trial showed high-dose EPA (4g/day) reduced cardiovascular events by 25% in high-risk patients. This level of evidence has made prescription omega-3s a standard treatment.
Coenzyme Q10 is essential for energy production in the heart—the most energy-demanding organ. Statin medications (commonly prescribed for CAD) deplete CoQ10, and supplementation may reduce statin side effects. The Q-SYMBIO trial showed CoQ10 reduced cardiovascular mortality in heart failure patients.
Magnesium helps blood vessels relax, supports healthy blood pressure, and maintains normal heart rhythm. Deficiency is common and associated with increased cardiovascular risk.
Vitamin K2 (specifically MK-7) activates proteins that keep calcium in bones and out of arteries. Studies show it can slow the progression of coronary artery calcification.

Expected timeline: Omega-3s lower triglycerides within 2-4 weeks; other benefits develop over months to years. CoQ10 effects may take 4-12 weeks. Magnesium benefits blood pressure within 1-2 months.

Important: These supplements complement, not replace, medications prescribed by your cardiologist.

Generated from peer-reviewed researchSchema v2.0

Supplements for Coronary Artery Disease (CAD)

Sorted by strength of evidence

BProbiotics
1
C-Reactive Protein (CRP)Oxidative Stress BiomarkersImprovesGlutathione (GSH)Improves
CPterostilbene
1
Blood PressureImprovesHigh-density lipoprotein (HDL)Low-density lipoprotein (LDL)Improves
CSaffron
1
Blood glucoseImprovesBody FatImprovesHigh-density lipoprotein (HDL)Improves
CFish Oil
1
Atrial Fibrillation IncidencePlatelet AggregationWorsensBlood glucoseImproves
CFlaxseed
1
Blood glucoseImprovesC-Reactive Protein (CRP)ImprovesInterleukin 6Improves
CCoenzyme Q10
1
Anti-Oxidant Enzyme ProfileImprovesOxidative Stress BiomarkersImprovesCardiovascular Disease MortalityImproves
CVitamin D
1
Body FatImprovesRisk Of Cardiovascular DiseaseImprovesLow-density lipoprotein (LDL)Improves
CBerberine
1
C-Reactive Protein (CRP)ImprovesTotal cholesterolImprovesTriglyceridesImproves
CD-Ribose
1
AnginaImprovesExercise CapacityImprovesExercise ToleranceImproves
CBetaine
1
Apolipoprotein AImprovesFibrinogenImprovesHigh-density lipoprotein (HDL)Improves
CResveratrol
1
Blood FlowImprovesTNF-AlphaImprovesC-Reactive Protein (CRP)Improves
CMagnesium
1
C-Reactive Protein (CRP)ImprovesHomocysteineImprovesSerum MagnesiumImproves
CGinkgo Biloba
1
Anti-Oxidant Enzyme ProfileApolipoprotein AImprovesAtherosclerotic SignsImproves
CPycnogenol
1
Blood FlowImprovesBlood PressureWorsensC-Reactive Protein (CRP)Worsens
CCurcumin
1
Blood glucoseImprovesC-Reactive Protein (CRP)ImprovesHigh-density lipoprotein (HDL)Improves
CTerminalia Arjuna
1
Heart SizeImprovesLeft Ventricular Ejection FractionImprovesLiver EnzymesWorsens
DRose Hip
1
AdiponectinBlood glucoseImprovesBlood PressureImproves
DConjugated Linoleic Acid
1
High-density lipoprotein (HDL)Low-density lipoprotein (LDL)ImprovesWeightImproves
DVitamin E
1
High-density lipoprotein (HDL)Oxidative Stress BiomarkersImprovesLow-density lipoprotein (LDL)Improves
DNiacin (Vitamin B3)
1
Cardiovascular Disease MortalityHeart Attack RiskWorsensTotal cholesterolImproves

Detailed Outcomes

Grade:
Effect:
Size:
Sort:
|
B
C-Reactive Protein (CRP)
Mixed effect
3 studies
?
Oxidative Stress Biomarkers
3 studies
Improves
?
Glutathione (GSH)
2 studies
Improves
?
Nitric Oxide
2 studies
Improves
?
Total Antioxidant Capacity (TAC)
2 studies
Improves
C
Blood glucose
Small Improvement
3 studies
smallImproves
?
C-Reactive Protein (CRP)
39 studies
Improves
?
Interleukin 6
20 studies
Improves
?
TNF-Alpha
17 studies
Improves
?
sICAM-1
7 studies
Improves
?
sE-Selectin
5 studies
Improves
?
High-density lipoprotein (HDL)
4 studies
Improves
?
Low-density lipoprotein (LDL)
4 studies
Improves
?
Total cholesterol
4 studies
Improves
?
Triglycerides
3 studies
Improves
C
Anti-Oxidant Enzyme Profile
Small Increase
2 studies
smallImproves
?
Oxidative Stress Biomarkers
3 studies
Improves
?
Cardiovascular Disease Mortality
1 study
Improves
?
Endogenous Advanced Glycation End Products
1 study
Improves
?
High-density lipoprotein (HDL)
1 study
Improves
?
Interleukin 6
1 study
Improves
?
Lipoprotein(a)
1 study
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Plasma Vitamin C
1 study
Improves
?
Plasma Vitamin E
1 study
Improves
?
Stroke Risk
1 study
Worsens
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
C
Blood Pressure
Small Improvement
1 study
smallImproves
?
High-density lipoprotein (HDL)
Small Detriment
1 study
small
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
?
Weight
1 study
Improves
C
Blood glucose
Small Improvement
1 study
smallImproves
?
Body Fat
1 study
Improves
?
High-density lipoprotein (HDL)
1 study
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Muscle Mass
1 study
Improves
?
Satiety
1 study
Improves
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
?
vLDL-C
1 study
Improves
?
Waist circumference
1 study
Improves
?
Waist-Hip Ratio
1 study
Improves
?
Weight
1 study
Improves
C
Atrial Fibrillation Incidence
Mixed effect
1 study
?
Platelet Aggregation
2 studies
Worsens
?
Blood glucose
1 study
Improves
?
Blood Pressure
1 study
Improves
?
C-Reactive Protein (CRP)
1 study
Improves
?
HbA1c
1 study
Improves
?
High-density lipoprotein (HDL)
1 study
Improves
?
Kidney Function
1 study
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
C
Body Fat
Small Decrease
1 study
smallImproves
?
Risk Of Cardiovascular Disease
2 studies
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Metabolic Rate
1 study
Improves
?
Parathyroid Hormone
1 study
Improves
?
TNF-Alpha
1 study
Improves
?
Triglycerides
1 study
Improves
?
Weight
1 study
Improves
C
C-Reactive Protein (CRP)
Small Decrease
1 study
smallImproves
?
Total cholesterol
5 studies
Improves
?
Triglycerides
5 studies
Improves
?
High-density lipoprotein (HDL)
4 studies
Improves
?
Interleukin 6
2 studies
Improves
?
TNF-Alpha
2 studies
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
C
Angina
Small Improvement
1 study
smallImproves
?
Exercise Capacity
2 studies
Improves
?
Exercise Tolerance
2 studies
Improves
?
ATP Regeneration
1 study
Improves
?
Atrial Contribution To Left Ventricular Filling
1 study
Improves
?
E wave deceleration time
1 study
Improves
?
End-Systolic Volume
1 study
Improves
?
Left Atrial Dimension
1 study
Improves
?
Left Ventricular Diastolic Dimension
1 study
Improves
?
Left Ventricular Ejection Fraction
1 study
Improves
?
Quality of Life
1 study
Improves
C
Apolipoprotein A
Small Increase
1 study
smallImproves
?
Fibrinogen
1 study
Improves
?
High-density lipoprotein (HDL)
1 study
Improves
?
Homocysteine
1 study
Worsens
?
LDL Oxidation
1 study
Worsens
?
Liver Enzymes
1 study
Worsens
?
Low-density lipoprotein (LDL)
1 study
Worsens
?
Plasminogen Inhibitor-1
1 study
Improves
?
Total cholesterol
1 study
Worsens
C
Blood Flow
Small Increase
1 study
smallImproves
?
TNF-Alpha
15 studies
Improves
?
C-Reactive Protein (CRP)
3 studies
Improves
?
Interleukin 6
2 studies
Improves
?
Low-density lipoprotein (LDL)
2 studies
Improves
?
Total cholesterol
2 studies
Improves
?
Blood glucose
1 study
Improves
?
Blood Pressure
1 study
Improves
?
High-density lipoprotein (HDL)
1 study
Improves
?
Insulin
1 study
Worsens
?
Insulin Resistance
1 study
Improves
?
Intercellular Adhesion Molecule 1
1 study
Worsens
?
Left Ventricular Ejection Fraction
1 study
Improves
?
Plasminogen Inhibitor-1
1 study
Improves
?
Vascular Function
1 study
Improves
C
C-Reactive Protein (CRP)
Small Decrease
1 study
smallImproves
?
Homocysteine
1 study
Improves
?
Serum Magnesium
1 study
Improves
C
Anti-Oxidant Enzyme Profile
Mixed effect
1 study
?
Apolipoprotein A
1 study
Improves
?
Atherosclerotic Signs
1 study
Improves
?
C-Reactive Protein (CRP)
1 study
Improves
?
Interleukin 6
1 study
Improves
?
LDL Oxidation
1 study
Improves
?
Myeloperoxidase
1 study
Improves
?
Nitric Oxide
1 study
Improves
C
Blood Flow
Moderate Increase
1 study
moderateImproves
?
Blood Pressure
1 study
Worsens
?
C-Reactive Protein (CRP)
1 study
Worsens
?
Heart Rate
1 study
Worsens
?
Inflammation
1 study
Worsens
?
Oxidative Stress Biomarkers
1 study
Worsens
C
Blood glucose
Small Improvement
1 study
smallImproves
?
C-Reactive Protein (CRP)
1 study
Improves
?
High-density lipoprotein (HDL)
1 study
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
?
vLDL-C
1 study
Improves
C
Heart Size
Small Decrease
1 study
smallImproves
C
Left Ventricular Ejection Fraction
Small Improvement
1 study
smallImproves
?
Liver Enzymes
1 study
Worsens
D
Adiponectin
No effect
1 study
none
?
Blood glucose
1 study
Improves
?
Blood Pressure
1 study
Improves
?
C-Reactive Protein (CRP)
1 study
Improves
?
Glycemic Control
1 study
Improves
?
HbA1c
1 study
Improves
?
High-density lipoprotein (HDL)
1 study
Improves
?
Insulin
1 study
Worsens
?
Liver Enzymes
1 study
Worsens
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
?
Weight
1 study
Improves
D
High-density lipoprotein (HDL)
No effect
1 study
none
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Weight
1 study
Improves
D
High-density lipoprotein (HDL)
No effect
1 study
none
?
Oxidative Stress Biomarkers
2 studies
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
D
Cardiovascular Disease Mortality
No effect
1 study
none
?
Heart Attack Risk
1 study
Worsens
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
D
Apolipoprotein A
No effect
1 study
none
?
Apolipoprotein B
1 study
Improves
?
Blood Pressure
1 study
Improves
?
Body Fat
1 study
Improves
?
C-Reactive Protein (CRP)
1 study
Improves
?
High-density lipoprotein (HDL)
1 study
Improves
?
Interleukin 6
1 study
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Muscle Mass
1 study
Improves
?
Myeloperoxidase
1 study
Improves
?
Oxidative Stress Biomarkers
1 study
Improves
?
Superoxide Dismutase Activity
1 study
Improves
?
TNF-Alpha
1 study
Improves
?
Total Antioxidant Capacity (TAC)
1 study
Improves
?
Total cholesterol
1 study
Improves
?
Triglycerides
1 study
Improves
?
Weight
1 study
Improves
D
C-Reactive Protein (CRP)
No effect
1 study
none
?
High-density lipoprotein (HDL)
1 study
Improves
?
Low-density lipoprotein (LDL)
1 study
Improves
?
Platelet Aggregation
1 study
Worsens
?
Vascular Function
3 studies
Improves
?
Homocysteine
1 study
Improves

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