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Condition

Venous Thromboembolism (Blood Clotting)

Venous thromboembolism is a blood clot that forms in a deep vein, usually in the leg, and can break loose and travel to the lungs, where it blocks blood flow. Omega-3 fatty acids and vitamin D are the supplements people look at most, but little research on them for this condition has been reviewed here so far. Their mild effects on platelets and clotting are plausible on paper, yet no trial findings can be reported, so the evidence is too thin to say whether they matter.

Supplements studied
1
Graded outcomes
0
Trials
1
People studied
26,779

Evidence by supplement

  • Strong
  • Moderate
  • Limited
  • Very limited

1 supplement

Vitamin E: outcomes studied for Venous Thromboembolism (Blood Clotting)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Thromboembolism RiskChanges; see studies1 study26,779 people

The Venous Thromboembolism (DVT/PE) Prevention Support protocol

2 primary supplements · 6 supporting supplements

  • Omega-3 Fatty Acids1–2 g EPA+DHA daily (CAUTION: discuss with doctor if on anticoagulants)
  • Vitamin D2,000–4,000 IU daily (monitor levels)

See the full protocol

Shop the evidence-backed picks

Support alongside medical care. These supplements are not a treatment for Venous Thromboembolism (Blood Clotting). If you are being treated for it, talk to your clinician before adding one: supplements can interact with medicines.

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Studies cited

63 studies from PubMed

  1. The Effect of Dietary Supplements on Male Infertility in Terms of Pregnancy, Live Birth, and Sperm Parameters: A Systematic Review and Meta-Analysis.Nutrients · PMID 40431450
  2. Clinical effectiveness of vitamin E and vitamin B6 for improving pain severity in cyclic mastalgiaIran J Nurs Midwifery Res · PMID 26793260
  3. Evaluating the effects of vitamin D and vitamin E supplement on premenstrual syndrome: A randomized, double-blind, controlled trialIran J Nurs Midwifery Res · PMID 27095989
  4. Daily supplementation of tocotrienol-rich fraction or alpha-tocopherol did not induce immunomodulatory changes in healthy human volunteersBr J Nutr · PMID 18702848
  5. Effects of supplementation with tocotrienol-rich fraction on immune response to tetanus toxoid immunization in normal healthy volunteersEur J Clin Nutr · PMID 20859299
  6. Effect of 50- and 100-mg vitamin E supplements on cellular immune function in noninstitutionalized elderly personsAm J Clin Nutr · PMID 10357750
  7. Vitamin E supplementation enhances cell-mediated immunity in healthy elderly subjectsAm J Clin Nutr · PMID 2203257
  8. Vitamin E supplementation and in vivo immune response in healthy elderly subjects. A randomized controlled trialJAMA · PMID 9134944
  9. Effects of gamma-tocopherol supplementation on thrombotic risk factorsAsia Pac J Clin Nutr · PMID 17704022
  10. Aspirin prevents stroke but not MI in women; vitamin E has no effect on CV disease or cancerCleve Clin J Med · PMID 16970138
  11. Effects of vitamin E on stroke: a systematic review with meta-analysis and trial sequential analysis.Stroke Vasc Neurol · PMID 33109618
  12. Effects of vitamin E on stroke subtypes: meta-analysis of randomised controlled trials.BMJ · PMID 21051774
  13. The effect of vitamin E on endothelial function of micro- and macrocirculation and left ventricular function in type 1 and type 2 diabetic patientsDiabetes · PMID 15616030
  14. The relationship between dose of vitamin E and suppression of oxidative stress in humansFree Radic Biol Med · PMID 17936185
  15. Effects of vitamin E on lipid peroxidation in healthy personsJAMA · PMID 11231747
  16. Dose dependent elevation of plasma tocotrienol levels and its effect on arterial compliance, plasma total antioxidant status, and lipid profile in healthy humans supplemented with tocotrienol rich vitamin EJ Nutr Sci Vitaminol · PMID 17330512
  17. Assessment of the safety of supplementation with different amounts of vitamin E in healthy older adultsAm J Clin Nutr · PMID 9701188
  18. Assessment of the safety of high-dose, short-term supplementation with vitamin E in healthy older adultsAm J Clin Nutr · PMID 7942576
  19. Effect of oral vitamin E (alpha-tocopherol) supplementation on vascular endothelial function in Type 2 diabetes mellitusDiabet Med · PMID 10220204
  20. Vitamin E in the primary prevention of cardiovascular disease and cancer: the Women's Health Study: a randomized controlled trialJAMA · PMID 15998891
  21. Effect of selenium and vitamin E on risk of prostate cancer and other cancers: the Selenium and Vitamin E Cancer Prevention Trial (SELECT)JAMA · PMID 19066370
  22. Prostate cancer and supplementation with alpha-tocopherol and beta-carotene: incidence and mortality in a controlled trialJ Natl Cancer Inst · PMID 9521168
  23. Vitamin E and the risk of prostate cancer: the Selenium and Vitamin E Cancer Prevention Trial (SELECT)JAMA · PMID 21990298
  24. Effects of long-term vitamin E supplementation on cardiovascular events and cancer: a randomized controlled trialJAMA · PMID 15769967
  25. Pioglitazone, vitamin E, or placebo for nonalcoholic steatohepatitisN Engl J Med · PMID 20427778
  26. Plasma transforming growth factor-beta1 level and efficacy of alpha-tocopherol in patients with non-alcoholic steatohepatitis: a pilot studyAliment Pharmacol Ther · PMID 11564008
  27. Long-term (>=2 yr) efficacy of vitamin E for non-alcoholic steatohepatitisHepatogastroenterology · PMID 23933938
  28. Vitamin E improves serum markers and histology in adults with metabolic dysfunction-associated steatotic liver disease: Systematic review and meta-analysis.J Gastroenterol Hepatol · PMID 39150005
  29. Effects of alpha-tocopherol and mixed tocopherol supplementation on markers of oxidative stress and inflammation in type 2 diabetesClin Chem · PMID 17272491
  30. Supplementation with mixed tocopherols increases serum and blood cell gamma-tocopherol but does not alter biomarkers of platelet activation in subjects with type 2 diabetesAm J Clin Nutr · PMID 16400056
  31. Pro-oxidant effect of alpha-tocopherol in patients with type 2 diabetes after an oral glucose tolerance test--a randomised controlled trialCardiovasc Diabetol · PMID 17316429
  32. Increased DNA oxidative susceptibility without increased plasma LDL oxidizability in Type II diabetes: effects of alpha-tocopherol supplementationClin Sci · PMID 11524040
  33. Vitamin E and risk of type 2 diabetes in the women's health study randomized controlled trialDiabetes · PMID 17003353
  34. Vitamin E in the primary prevention of rheumatoid arthritis: the Women's Health StudyArthritis Rheum · PMID 18975365
  35. Study on the effect of megavitamin E supplementation in manAm J Clin Nutr · PMID 347918
  36. Megavitamin E supplementation in manAm J Clin Nutr · PMID 803000
  37. Effects of elevated d-alpha(RRR)-tocopherol dosage in manJ Nutr Sci Vitaminol · PMID 2732807
  38. A randomised placebo-controlled trial to determine the effect of vitamin E in treatment of primary dysmenorrhoeaBJOG · PMID 11762659
  39. A randomised controlled trial of vitamin E in the treatment of primary dysmenorrhoeaBJOG · PMID 15777446
  40. Evaluation of the effect of vitamin E on pelvic pain reduction in women suffering from primary dysmenorrheaJ Reprod Med · PMID 23447916
  41. Effect of vitamin E therapy on sexual functions of uremic patients in hemodialysisInt J Artif Organs · PMID 1490755
  42. The effect of alpha-tocopherol on premenstrual symptomatology: a double-blind study. II. Endocrine correlatesJ Am Coll Nutr · PMID 6238991
  43. alpha-Tocopherol supplementation in racing cyclists during extreme endurance trainingInt J Sport Nutr · PMID 7987360
  44. Effect of alpha-tocopherol supplementation on plasma homocysteine and oxidative stress in highly trained athletes before and after exhaustive exerciseJ Nutr Biochem · PMID 16115541
  45. Vitamin E supplementation improves endothelial function in type I diabetes mellitus: a randomized, placebo-controlled studyJ Am Coll Cardiol · PMID 10898419
  46. Vitamin E and respiratory tract infections in elderly nursing home residents: a randomized controlled trialJAMA · PMID 15315997
  47. Effects of random allocation to vitamin E supplementation on the occurrence of venous thromboembolism: report from the Women's Health StudyCirculation · PMID 17846285
  48. Vitamin E supplementation and cataract: randomized controlled trialOphthalmology · PMID 14711717
  49. Vitamin E supplements in asthma: a parallel group randomised placebo controlled trialThorax · PMID 15282383
  50. Effects of tocotrienol supplementation on hair growth in human volunteersTrop Life Sci Res · PMID 24575202
  51. Effects of vitamin E supplementation on the risk and progression of AD: a systematic review and meta-analysis.Nutr Neurosci · PMID 30900960
  52. Vitamin E and donepezil for the treatment of mild cognitive impairmentN Engl J Med · PMID 15829527
  53. Vitamin E for Alzheimer's dementia and mild cognitive impairment.Cochrane Database Syst Rev · PMID 28418065
  54. Effect of vitamin E and memantine on functional decline in Alzheimer disease: the TEAM-AD VA cooperative randomized trialJAMA · PMID 24381967
  55. A controlled trial of selegiline, alpha-tocopherol, or both as treatment for Alzheimer's disease. The Alzheimer's Disease Cooperative StudyN Engl J Med · PMID 9110909
  56. A randomized trial of vitamin E supplementation and cognitive function in womenArch Intern Med · PMID 17159011
  57. Failure of topical steroids and vitamin E to reduce postoperative scar formation following reconstructive surgeryJ Burn Care Rehabil · PMID 3312212
  58. The effects of topical vitamin E on the cosmetic appearance of scarsDermatol Surg · PMID 10417589
  59. Therapeutic effects of vitamin E on cyclic mastalgiaBreast J · PMID 19614907
  60. Rectal administration of d-alpha tocopherol for active ulcerative colitis: a preliminary reportWorld J Gastroenterol · PMID 18932276
  61. Vitamin E supplementation in people with cystic fibrosis.Cochrane Database Syst Rev · PMID 32892350
  62. Vitamin E for people with non-alcoholic fatty liver disease.Cochrane Database Syst Rev · PMID 39412049
  63. Renal protective effects of vitamin E for drug-induced kidney injury: a meta-analysis.Front Pharmacol · PMID 40297145