# Selenium Fumarate **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/selenium-fumarate **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-25 **Evidence Score:** 2 / 10 **Category:** Mineral **Also Known As:** Selenium fumarate, Se-fumarate, Selenium (2E)-butenedioate, Selenous fumarate salt, Fumaric acid selenium salt ## Overview Selenium fumarate is a synthetic selenium salt formed by bonding selenium with fumaric acid, theoretically intended as a bioavailable selenium delivery form. No peer-reviewed research, clinical trials, or documented biological activity exists for this specific compound in human or animal models. ## Health Benefits • No documented health benefits - no clinical trials or studies exist for Selenium Fumarate • No evidence of therapeutic effects - compound not recognized in medical literature • No established biological activity - no biochemical pathway data available • No traditional or modern use documented - absent from all standard databases • No safety or efficacy data - compound appears to be non-existent in scientific records ## Mechanism of Action No established mechanism of action has been documented for selenium fumarate specifically. Theoretically, if selenium were liberated from the fumarate salt after ingestion, free selenium ions could potentially be incorporated into selenoproteins such as [glutathione](/ingredients/condition/detox) peroxidase (GPx) and thioredoxin reductase (TrxR), which are central to [antioxidant](/ingredients/condition/antioxidant) defense and redox signaling. However, no pharmacokinetic, bioavailability, or enzymatic data exist to confirm selenium is meaningfully released or utilized from this particular salt form. ## Clinical Summary As of the current date, zero clinical trials, observational studies, in vitro studies, or animal studies have been published specifically examining selenium fumarate. The compound does not appear in PubMed, EMBASE, or major pharmacological databases as a studied entity. By contrast, other selenium forms such as selenomethionine, sodium selenite, and selenium-enriched yeast have extensive human trial data supporting their bioavailability and health effects. The complete absence of evidence means no efficacy, dosing, or safety conclusions can be drawn for selenium fumarate specifically. ## Nutritional Profile Selenium Fumarate is not a recognized or well-characterized compound in standard pharmaceutical, nutritional, or chemical databases. Unlike established selenium supplements such as Sodium Selenite (Na2SeO3), Selenomethionine (C5H11NO2Se), or Selenium Yeast, 'Selenium Fumarate' does not appear in authoritative references (e.g., USP, EFSA, WHO monographs). A hypothetical compound formed between selenium and fumaric acid (C4H4O4) could theoretically provide elemental selenium (atomic weight 78.96 g/mol), but no standardized formulation, elemental selenium concentration, or stoichiometric data exists. For comparison, recognized selenium forms typically deliver 50–200 µg of elemental Se per dose, with bioavailability ranging from ~50% (sodium selenite, inorganic) to ~90% (selenomethionine, organic). No data on fumarate-bound selenium bioavailability, absorption kinetics, or tissue distribution is available. The fumarate moiety (as seen in legitimate supplements like ferrous fumarate, where fumaric acid serves as a counterion to improve solubility and absorption of iron) could theoretically enhance mineral absorption, but this has never been studied or validated for selenium. No macronutrient content (protein, fat, carbohydrate, fiber) is applicable as this would be a trace mineral supplement. No bioactive compound profile, vitamin content, or micronutrient co-factors have been documented. The compound lacks a CAS registry number specific to 'selenium fumarate,' has no established Certificate of Analysis parameters, and no Good Manufacturing Practice (GMP) specifications exist. Given the complete absence of analytical, pharmacokinetic, and nutritional data, no reliable nutritional profile can be constructed. Consumers and practitioners should rely on well-established selenium forms — Selenomethionine (best bioavailability, ~90%), Selenium-enriched yeast (organic matrix, ~60–80% bioavailability), Sodium selenite (inorganic, ~50% bioavailability), or Methylselenocysteine — all of which have robust safety, efficacy, and compositional data. ## Dosage & Preparation No clinically studied dosages exist for Selenium Fumarate as it is not a recognized compound. No forms (extract, powder, standardized) or standardization details are available. Consult a healthcare provider before starting any new supplement. ## Safety & Drug Interactions No safety profile, toxicology data, or drug interaction studies exist for selenium fumarate as an isolated compound. General selenium toxicity risks apply by extrapolation: excess selenium intake above 400 mcg per day in adults can cause selenosis, characterized by hair loss, nail brittleness, gastrointestinal distress, and neurological symptoms. Selenium compounds broadly may interact with anticoagulants, chemotherapy agents, and statins, though these interactions are not confirmed for selenium fumarate. Pregnant or breastfeeding individuals should avoid unresearched selenium salts, as selenium is teratogenic at high doses and the fumarate form carries no established safe dosage. ## Scientific Research No human clinical trials, RCTs, or meta-analyses exist for Selenium Fumarate. The research dossier found zero matches in PubMed or other scientific databases, with no PMIDs available as this compound is not documented in any peer-reviewed literature. ## Historical & Cultural Context No historical or traditional medicine context exists for Selenium Fumarate. The compound has no references in traditional use databases or historical texts, as it appears to be a non-standard form not documented in any cultural or medicinal traditions. ## Synergistic Combinations Cannot be determined - compound not recognized ## Frequently Asked Questions ### Is selenium fumarate the same as selenomethionine? No, selenium fumarate and selenomethionine are chemically distinct compounds. Selenomethionine is an organic selenium-amino acid complex with extensive bioavailability data showing approximately 90% absorption in humans, while selenium fumarate is a salt of fumaric acid with no published absorption or bioavailability research whatsoever. ### Does selenium fumarate have any proven health benefits? No peer-reviewed studies, clinical trials, or case reports document any health benefits for selenium fumarate. Unlike well-researched selenium forms that support glutathione peroxidase activity and thyroid hormone metabolism, selenium fumarate has no evidence base connecting it to any measurable physiological outcome. ### What is the recommended dosage of selenium fumarate? No established or evidence-based dosage exists for selenium fumarate, as no pharmacokinetic or clinical studies have been conducted. The general tolerable upper intake level for total selenium from all sources is 400 mcg per day for adults, set by the Institute of Medicine, but this figure was not derived from data on selenium fumarate specifically. ### Why do supplement labels list selenium fumarate as an ingredient? Selenium fumarate may appear on supplement labels as a low-cost or novel selenium delivery form, but its inclusion does not imply clinical validation. Regulatory bodies like the FDA do not require proof of efficacy before a mineral salt is used in a dietary supplement, which allows unstudied compounds like selenium fumarate to reach market without clinical evidence. ### What are better-studied alternatives to selenium fumarate? Selenomethionine and selenium-enriched yeast are the most clinically supported selenium forms, with randomized controlled trials demonstrating bioavailability and antioxidant enzyme support, including GPx activity increases at doses of 100–200 mcg per day. Sodium selenite is another well-characterized inorganic form used extensively in clinical nutrition research, making any of these preferable choices over selenium fumarate for documented efficacy. ### Is selenium fumarate actually a real supplement ingredient? Selenium fumarate does not appear to be a documented or recognized chemical compound in scientific literature, medical databases, or supplement ingredient registries. No clinical studies, safety data, or biochemical pathways have been established for this ingredient, suggesting it may not exist as a legitimate supplement form. If you encounter this ingredient on a label, it may be a labeling error or mislabeled selenium compound, and you should contact the manufacturer for clarification. ### How does selenium fumarate compare to other selenium supplement forms available? Unlike established selenium forms such as selenomethionine, selenite, and sodium selenate—which have documented bioavailability and clinical research—selenium fumarate lacks any scientific validation or recognized biological activity. Because no studies exist on selenium fumarate's absorption or effectiveness, it cannot be meaningfully compared to proven selenium forms. Consumers seeking selenium supplementation should choose well-researched alternatives with established safety and efficacy profiles. ### Why would a supplement manufacturer use selenium fumarate if it's not studied or recognized? Selenium fumarate may appear on supplement labels due to manufacturing errors, mislabeling, or confusion with other selenium compounds, rather than intentional formulation. Some manufacturers may use obscure or invented ingredient names without adequate scientific backing or regulatory review. Before purchasing a supplement containing selenium fumarate, verify the ingredient with the manufacturer and check for certified, well-established selenium forms instead. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*