Humic and Fulvic Acid are organic, all-natural substances derived from humates (raw mineral ore) which has been extracted from ancient deposits of decomposed plant matter.
Humic and Fulvic Acids in general are very complex molecules (acid radicals) bound to ore in their raw form and then extracted using a variety of methods.
The most prominent difference between Humic and Fulvic Acid is their molecular weights (shape & size). While Fulvic Acid is considered the smaller constituent at an average size of 1500 to 3000 daltons (DA), Humic Acid is considered the larger, disc-shaped constituent with a size on average of 30,000 DA. Humic Acids due to their shape/size are more readily able to bind to virus binding sites than Fulvic Acids. However, due to the smaller size of the Fulvic Acid, these likely prove better at accessing more areas at the cellular level. So, Humic and Fulvic Acid each have their unique function and therefore a better base material dependent upon the function or purpose of a specific formula/product.