Protocol · Cardiovascular Health
Venous Thromboembolism (DVT/PE) Prevention Support Protocol
Omega-3 Fatty Acids and Vitamin D are the core of this stack, with 6 supporting supplements. Each row gives the amount the protocol lists and the grade our evidence database holds for that supplement in Venous Thromboembolism (DVT/PE) Prevention Support.
We are re-verifying the studies cited on protocol pages; only confirmed citations are shown.
The stack
8 supplements · none graded yet
| Grade | Supplement | Amount listed | Why it’s in the stack | Evidence on file | Shop |
|---|---|---|---|---|---|
| Primary stackThe core of this protocol | |||||
| Omega-3 Fatty Acids | Amount listed: 1–2 g EPA+DHA daily (CAUTION: discuss with doctor if on anticoagulants) | Mild antiplatelet effects; may reduce blood viscosity and support cardiovascular health | Not graded yet | ||
| Vitamin D | Amount listed: 2,000–4,000 IU daily (monitor levels) | Deficiency associated with increased VTE risk; may affect coagulation factors | Not graded yet | ||
| Supporting stackListed as additions to the core | |||||
| Nattokinase | Amount listed: 2,000–4,000 FU daily (AVOID if on anticoagulants) | Fibrinolytic enzyme that may help dissolve fibrin; studied for cardiovascular health | Not graded yet | ||
| Vitamin E | Amount listed: 100–200 IU daily (CAUTION: higher doses may increase bleeding) | Antioxidant with mild antiplatelet effects
| Not graded yet | ||
| Magnesium | Amount listed: 300–400 mg daily | Supports cardiovascular health; may have mild antiplatelet effects | Not graded yet | ||
| Vitamin B12 | Amount listed: 1,000 mcg daily if deficient | Deficiency elevates homocysteine, a VTE risk factor | Not graded yet | ||
| Folate | Amount listed: 400–800 mcg daily (as methylfolate) | Lowers homocysteine levels; deficiency associated with increased VTE risk | Not graded yet | ||
| Quercetin | Amount listed: 500 mg twice daily (CAUTION with anticoagulants) | Flavonoid with antiplatelet and anti-inflammatory properties | Not graded yet | ||
Shop the evidence-backed picks
Support alongside medical care. These supplements are not a treatment for Venous Thromboembolism (DVT/PE). If you are being treated for it, talk to your clinician before adding one: supplements can interact with medicines.
The collection holds the supplements we grade A or B for its theme, in third-party tested products where the catalog has them. It opens in our Fullscript store. You can look through it without signing in; Fullscript asks for a free account to order.
Or shop one supplement
Each opens third-party tested products, matched to the dose above where we can.
We earn from purchases made in our Fullscript store, and links to Fullscript, iHerb or Thorne carry our referral, so we may earn a commission at no extra cost to you. Grades come from the research and never change based on what we earn. Full disclosure
How this protocol works
In plain language
Venous thromboembolism (VTE) includes deep vein thrombosis (DVT, blood clots in deep veins, usually legs) and pulmonary embolism (PE, clots that travel to the lungs). VTE affects hundreds of thousands of people yearly and can be fatal (PE is a leading cause of preventable hospital death). Risk factors include immobility (travel, hospitalization, surgery), cancer, pregnancy, estrogen use, obesity, genetic clotting disorders, and prior VTE.
CRITICAL: VTE is a medical emergency. DVT symptoms include leg swelling, pain, warmth, and redness. PE symptoms include sudden shortness of breath, chest pain (worse with breathing), rapid heart rate, coughing up blood, and feeling faint. If you suspect VTE, seek immediate medical care. Treatment requires anticoagulation (blood thinners like warfarin, DOACs) - this is NOT a condition to manage with supplements alone. These supplements may support cardiovascular health and potentially reduce recurrence risk as adjuncts, but they CANNOT replace anticoagulation. IMPORTANT: Many supplements affect bleeding - always discuss with your doctor before taking any supplements if you're on blood thinners.
Omega-3 Fatty Acids* have mild antiplatelet effects and may reduce blood viscosity. They're generally considered safe at moderate doses with anticoagulants but discuss with your doctor.
Vitamin D* deficiency is associated with increased VTE risk. Maintaining adequate levels may be protective, though this is still being studied.
Nattokinase* is a fibrinolytic enzyme from fermented soybeans that has been studied for its clot-dissolving properties. AVOID if on any anticoagulant - serious bleeding risk.
Vitamin E* has mild antiplatelet effects. Keep doses moderate.
B12 and Folate* - deficiencies elevate homocysteine, which is associated with VTE risk.
Magnesium* supports cardiovascular health.
Quercetin* has antiplatelet properties - use cautiously with blood thinners.
Expected timeline: Prevention is ongoing. For those with prior VTE, anticoagulation duration depends on circumstances (provoked vs unprovoked, risk factors). These supplements support long-term cardiovascular health.