--- source_url: https://hangovr180.com/science/fulvic-acid/humic-acid.md canonical_url: https://hangovr180.com/science/fulvic-acid/humic-acid generated_at: 2026-06-28T19:53:17Z build_id: ebfcfef page_type: science-leaf claim_ids: [SF-15, SF-33, SF-16] --- # HUMIC ACID: THE RELATED COMPOUND *Humic acid is the larger humic-substances family member that shares fulvic acid's chelation chemistry but at molecular weights that make it less useful for oral supplement delivery -- the reason H180 uses fulvic specifically rather than humic.* 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. ## Where Humic Acid Sits in the Family Humic acid is one of three operational fractions of humic substances (the other two being fulvic acid and humin), classified by solubility behavior. Humic acid is insoluble in acidic conditions but soluble in alkaline conditions, while fulvic acid is soluble at all pH values. Both come from the same microbial breakdown of plant and animal matter in soil and freshwater sediments, and both share the carboxyl-and-phenolic functional-group chemistry that drives their chelation activity[3][4]. The big structural difference is molecular weight. Humic acid sits at roughly 50 to 100 kilodaltons. Fulvic acid sits at 0.5 to 2 kilodaltons -- two orders of magnitude smaller. That size gap is what determines which biological applications each one is suited for[3]. ## What Humic Acid Does Biologically > **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. Humic acid has a broader and more dramatic biological literature than fulvic acid does. The 2023 clinical review of humic acid as an antiviral covers documented in-vitro activity against a wide range of enveloped viruses (HIV-1, HSV-1 and -2, EBV, VZV, influenza A and B, RSV, hCMV, and SARS-CoV-2), with the proposed mechanism being inhibition of viral fusion at the spike-protein-receptor binding site[1]. (humic acid has more dramatic biological literature than fulvic does, including antiviral and tumor-related work, which is why I want to be careful not to over-promise on the fulvic-acid side.) The 2023 review of humic acids in intoxications covers therapeutic applications across heavy metal poisoning, gastrointestinal inflammation, and various toxin exposures, with the mechanism centered on the same chelation chemistry that makes fulvic acid useful in absorption contexts[2]. > **Claim [SF-33]:** Calm your body's reactions, reducing occasional inflammation. † > > † 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. ## Why Humic Acid Is the Wrong Tool for an Oral H180-Format Supplement > **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. The molecular-weight gap explains why humic and fulvic differ in absorption and use cases, in the soil and pharmacology literature both at least. At 50-100 kilodaltons, humic acid is too large to cross intestinal membranes efficiently. It does not absorb well in the gut, so its biological activity in oral supplement format is limited mostly to the gut lumen itself (where some of the antiviral and inflammation-modulating effects can still occur, but only locally). The systemic effects of humic acid are typically achieved through topical, inhaled, or injectable formats in the published research, not through standard oral supplementation. For the H180 use case -- helping DHM cross the gut wall and reach liver cells -- the molecular weight requirement is small enough to permit absorption and large enough to chelate the target compound effectively. Fulvic acid hits that window. Humic acid does not. ## What Each One Is Right For Humic acid is the right tool fo soil amendment and some topical or environmental applications, but the wrong tool for an oral supplement targeting hepatic delivery. Fulvic acid is the right tool for the H180 formula's specific job. The two compounds are related but appropriate for different contexts, and the choice between them in any given product should reflect the application requirements rather than supplement-aisle convention. ## What This Page Is Not Claiming We are not claiming humic acid is therapeutically inferior to fulvic acid in absolute terms. The published literature on humic acid is in some areas richer than the literature on fulvic acid (the antiviral evidence, for example). What we are claiming is that for the specific oral-supplement use case the H180 formula targets, the molecular weight and absorption profile of fulvic acid fits the requirements and humic acid does not. For the side-by-side comparison in detail, see [Fulvic Acid vs. Humic Acid](/science/fulvic-acid/fulvic-vs-humic). For why fulvic acid earns its place in the formula specifically, see [Fulvic Acid Cellular Transport](/science/fulvic-acid/cellular-transport). ## Citations 1. [Clinical Review of Humic Acid as an Antiviral -- Leadup to Translational Applications in Clinical Humeomics](https://pmc.ncbi.nlm.nih.gov/articles/PMC9875298/). PMC9875298. 2. [Therapeutic Efficiency of Humic Acids in Intoxications](https://pmc.ncbi.nlm.nih.gov/articles/PMC10143271/). PMC10143271. 3. [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. 4. [Molecular Features of Humic Acids and Fulvic Acids from Contrasting Environments](https://pubmed.ncbi.nlm.nih.gov/28102075/). PMID 28102075. ## Read Next - [Fulvic Acid vs. Humic Acid](/science/fulvic-acid/fulvic-vs-humic) - [What Is Fulvic Acid](/science/fulvic-acid/what-is-fulvic-acid) - [Fulvic Acid Cellular Transport](/science/fulvic-acid/cellular-transport) - [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/humic-acid