Supplements for heart health (50+)

The heart-health-50+ stack — rationale by ingredient

Omega-3 EPA/DHA 1–2 g/day (or prescription icosapent ethyl 4 g/day if indicated)

Modest LDL-neutral triglyceride reduction and improved omega-3 index. REDUCE-IT data supports prescription icosapent ethyl (Vascepa) in secondary CV prevention with elevated triglycerides. Over-the-counter fish oil at 1–2 g/day is a reasonable general-CV adjunct. High-dose (≥1.8 g/day) carries an atrial fibrillation signal — coordinate with cardiology.

Vitamin D3 to a 30–50 ng/mL 25-OH-D target

Endothelial function and blood pressure trials are mixed on overall CV outcomes; correction of deficiency is the appropriate target rather than blanket supplementation. Test 25-OH-D; supplement to target.

CoQ10 (Ubiquinol) 100–200 mg/day with fat, for statin users

Statins deplete CoQ10. Symptomatic statin-associated myalgia in some users may improve with CoQ10 supplementation; the systematic review evidence is mixed but the mechanism is plausible and tolerance is excellent. Ubiquinol form preferred for adults over 40. The Q-SYMBIO trial showed mortality benefit at 300 mg/day in heart failure with reduced ejection fraction — a specific indication with strong evidence.

Magnesium glycinate 200–400 mg elemental in evening

Mild blood pressure reduction (~3 mmHg systolic), arrhythmia protection in deficiency, and sleep support. Avoid in eGFR <30; loose stools at higher doses. Form choice matters — glycinate or malate, not oxide.

Psyllium 5–10 g/day

Soluble fibre — directly binds bile acids, reduces LDL by 3–7%, modest glycemic improvement. FDA health-claim-eligible. Start at 3.5 g once daily with adequate water; titrate over 2 weeks. Pairs with statins; doesn't replace.

Dietary nitrate from beetroot 400–800 mg/day (or 300–600 mL juice)

Modest systolic BP reduction (~3–4 mmHg in hypertensive adults). Endurance-performance benefit if you're still exercising hard. Avoid antibacterial mouthwash (kills the oral bacteria needed for nitrate-to-nitrite conversion). Note: do not rely on for hypertension management — discuss with cardiologist.

Aged garlic extract (Kyolic) 600–1200 mg/day

Larger trial evidence than fresh garlic; modest BP and lipid effects; some signal on coronary artery calcium progression. Discuss with prescriber if on anticoagulants (mild antiplatelet effect).

Vitamin K2 (MK-7) 100–180 mcg/day

Direction calcium into bone and away from arteries; Rotterdam Study and follow-on observational data support; trial-level mortality endpoints are absent. AVOID if on warfarin (directly antagonises) without prescriber coordination.

The base layer that no supplement matches

The largest cardiovascular wins in adults over 50 come from: regular aerobic exercise (150+ min/week moderate, plus 2× weekly resistance), Mediterranean or DASH dietary pattern, weight management toward BMI 22–27, blood pressure control to <130/80 (often requiring 1–3 prescription agents), LDL targets per ASCVD risk (often statin-based), HbA1c management if pre-diabetic or diabetic, smoking cessation, sleep apnea identification and treatment, and stress management. Annual primary care and ASCVD risk recalculation. Supplements are adjunct, not foundation.