--- source_url: https://hangovr180.com/science/fulvic-acid/fulvic-vs-humic.md canonical_url: https://hangovr180.com/science/fulvic-acid/fulvic-vs-humic generated_at: 2026-06-28T19:53:17Z build_id: ebfcfef page_type: science-leaf claim_ids: [SF-15, SF-09, SF-16] --- # FULVIC ACID VS. HUMIC ACID *Both fulvic and humic acids are humic substances from decomposed plant matter, but the molecular weight difference between them changes everything about how they behave biologically and which one belongs in an oral formula.* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. ## The Family They Belong To Humic substances are the dark, organic component of soil and freshwater sediments left behind after microbial decomposition of plant and animal matter runs to a stable endpoint. They are operationally classified into three fractions based on solubility behavior: humin (insoluble at any pH), humic acid (insoluble in acidic conditions, soluble in alkaline), and fulvic acid (soluble at all pH values). The chemistry overlaps but the size and solubility distinctions translate into very different biological behavior. ## Size Is the Big Difference Fulvic acid sits at roughly 0.5 to 2 kilodaltons in molecular weight. Humic acid sits at 50 to 100 kilodaltons -- two orders of magnitude larger. Both have carboxyl, phenolic, and hydroxyl functional groups, but the smaller fulvic molecules have a higher density of oxygen-containing functional groups per unit mass[1][2]. That higher functional-group density is what gives fulvic acid its more aggressive chelation behavior with metal ions and small organic molecules. > **Claim [SF-15]:** Boosts your antioxidant defenses. † > > † These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. In the absorption-relevant ranges, the smaller molecule generally outperforms the larger one for membrane crossing in the available data at least. (I've seen products labeled "humic complex" on retail shelves that don't disclose the fulvic-to-humic ratio at all, which makes the actual chelation capacity of the serving impossible to estimate.) ## Why This Matters for an Oral Formula > **Claim [SF-09]:** Boosts your cell's energy factories. † > > † These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. For an oral supplement, three properties matter: solubility (so the molecule actually dissolves in the gut and reaches the absorption surface), molecular weight (so it can pass enterocyte membranes or chelate small molecules that need to pass them), and functional-group density (so the chelation capacity is high enough to bind a meaningful amount of the target compound per milligram). Fulvic acid wins on all three relative to humic acid. > **Claim [SF-16]:** Supports the body's defenses against daily stressors. † > > † These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Humic acid has its own biological literature -- antiviral activity, mineral-binding behavior in soil remediation, anti-inflammatory effects in some animal models. The point here is not that humic acid is useless, just that for the specific job of "help DHM cross the gut wall and reach liver cells," the molecular weight and solubility profile of fulvic acid fits the requirements and humic acid does not[3]. ## What This Page Is Not Claiming We are not claiming fulvic acid is universally superior to humic acid. They are different molecules with different properties and different appropriate uses. For an oral formula, fulvic acid is teh right tool because of size, solubility, and chelation profile. For a soil amendment or an environmental remediation context, humic acid often makes more sense[4]. For where fulvic acid actually fits in the H180 formula, see [Fulvic Acid Cellular Transport](/science/fulvic-acid/cellular-transport). For why purity matters as much as quantity, see [Fulvic Acid Purity and Dose](/science/fulvic-acid/purity-dose). ## Citations 1. Esparza-Soto M, et al. [Size and Charge Evaluation of Standard Humic and Fulvic Acids as Crucial Factors to Determine Their Environmental Behavior and Impact](https://pmc.ncbi.nlm.nih.gov/articles/PMC6041962/). PMC6041962. 2. Tadini AM, et al. [Molecular Features of Humic Acids and Fulvic Acids from Contrasting Environments](https://pubmed.ncbi.nlm.nih.gov/28102075/). PubMed 28102075. 3. Winkler J, Ghosh S. [Therapeutic Potential of Fulvic Acid in Chronic Inflammatory Diseases and Diabetes](https://pmc.ncbi.nlm.nih.gov/articles/PMC6151376/). PMC6151376. 4. Vetter J, et al. [A Toxicological Evaluation of a Fulvic and Humic Acids Preparation](https://pmc.ncbi.nlm.nih.gov/articles/PMC7505752/). PMC7505752. ## Read Next - [What Is Fulvic Acid](/science/fulvic-acid/what-is-fulvic-acid) - [Fulvic Acid Cellular Transport](/science/fulvic-acid/cellular-transport) - [Fulvic Acid Purity and Dose](/science/fulvic-acid/purity-dose) - [Fulvic Acid -- The Hub](/science/fulvic-acid) **Written by Mark Scott** - Co-Formulator, Hangovr180® | Co-Inventor, [US Application 18/698,010](https://patents.google.com/patent/US20250073201A1) Mark Scott conducted approximately 150 personal formulation tests over six months to develop the H180 ingredient combination. [Editorial standards](/editorial-standards) --- These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Hangovr180® is a dietary supplement. Individual results may vary. Consult your healthcare provider before use if you have any medical conditions or take medications. [US Application 18/698,010](https://patents.google.com/patent/US20250073201A1). Canonical: https://hangovr180.com/science/fulvic-acid/fulvic-vs-humic