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Plant Sterols / Stanols Side Effects & Safety

Evidence:Strong
·

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Generally Safe

Potential Side Effects

  • Mild GI symptoms (diarrhea, nausea) — uncommon
  • May reduce absorption of fat-soluble vitamins (A, D, E, K) and carotenoids
  • Rare: phytosterolemia in individuals with genetic ABCG5/ABCG8 mutations

Drug & Supplement Interactions

  • Ezetimibe — both block cholesterol absorption; combination has additive effects but needs monitoring
  • Fat-soluble vitamins and carotenoid supplements — take separately; sterols may reduce absorption by 10-20%
  • Statins — safe and beneficial to combine; additive LDL lowering

Maximum Dose

Do not exceed: 3g/day (no additional benefit above 3g)

Full Plant Sterols / Stanols Guide

References

  1. Meta-analysisRas RT, Geleijnse JM, Trautwein EA (2014). LDL-cholesterol-lowering effect of plant sterols and stanols across different dose ranges: a meta-analysis of randomised controlled studies. British Journal of Nutrition. DOI PubMed
  2. Meta-analysisAbumweis SS, Barake R, Jones PJ (2008). Plant sterols/stanols as cholesterol lowering agents: a meta-analysis of randomized controlled trials. Food & Nutrition Research. DOI PubMed
  3. Malhotra A, Shafiq N, Arora A, Singh M, et al. (2014). Dietary interventions (plant sterols, stanols, omega-3 fatty acids, soy protein and dietary fibers) for familial hypercholesterolaemia.. The Cochrane database of systematic reviews. DOI PubMed
  4. Meta-analysisAmir Shaghaghi M, Abumweis SS, Jones PJH (2013). Cholesterol-lowering efficacy of plant sterols/stanols provided in capsule and tablet formats: results of a systematic review and meta-analysis.. Journal of the Academy of Nutrition and Dietetics. DOI PubMed
  5. Fogacci F, ALGhasab NS, Di Micoli V, Giovannini M, et al. (2024). Cholesterol-Lowering Bioactive Foods and Nutraceuticals in Pediatrics: Clinical Evidence of Efficacy and Safety.. Nutrients. DOI PubMed
  6. ReviewBarkas F, Bathrellou E, Nomikos T, Panagiotakos D, et al. (2023). Plant Sterols and Plant Stanols in Cholesterol Management and Cardiovascular Prevention.. Nutrients. DOI PubMed
  7. Abumweis S, Alzyoud L, Alqadi S (2023). Apolipoprotein E Genetic Variant and Blood Lipid Responses to Plant Sterols: A Systematic Review and Pooled Analysis of Clinical Trials.. Preventive nutrition and food science. DOI PubMed
Show 5 more references
  1. Osadnik T, Goławski M, Lewandowski P, Morze J, et al. (2022). A network meta-analysis on the comparative effect of nutraceuticals on lipid profile in adults.. Pharmacological research. DOI PubMed
  2. Barkas F, Nomikos T, Liberopoulos E, Panagiotakos D (2020). Diet and Cardiovascular Disease Risk Among Individuals with Familial Hypercholesterolemia: Systematic Review and Meta-Analysis.. Nutrients. DOI PubMed
  3. RCTMcKenney JM, Jenks BH, Shneyvas E, Brooks JR, et al. (2014). A softgel dietary supplement containing esterified plant sterols and stanols improves the blood lipid profile of adults with primary hypercholesterolemia: a randomized, double-blind, placebo-controlled replication study.. Journal of the Academy of Nutrition and Dietetics. DOI PubMed
  4. Maki KC, Lawless AL, Reeves MS, Kelley KM, et al. (2013). Lipid effects of a dietary supplement softgel capsule containing plant sterols/stanols in primary hypercholesterolemia.. Nutrition (Burbank, Los Angeles County, Calif.). DOI PubMed
  5. Maki KC, Lawless AL, Reeves MS, Dicklin MR, et al. (2012). Lipid-altering effects of a dietary supplement tablet containing free plant sterols and stanols in men and women with primary hypercholesterolaemia: a randomized, placebo-controlled crossover trial.. International journal of food sciences and nutrition. DOI PubMed