Product-type taxonomy splits the market into Topical, Systemic, and Supportive Care classes. Topical agents—subdivided into Corticosteroid Ointments, Anesthetics, Antiseptics, and Barrier Films—account for the majority of days-of-therapy due to rapid pain relief and favorable risk/benefit, with mid-potency steroids currently holding the largest share. Systemic therapy, comprising Immunosuppressants, Antibiotics, and Colchicine, is reserved for complex aphthosis; although prescribed to <10 % of patients, the annual therapy cost is an order of magnitude higher, materially lifting market value. Supportive Care—Nutritional Supplements, Mouth Rinses, and Laser/Energy-based Devices—acts adjunctively; supplements correct underlying deficiencies, while low-level laser therapy reduces lesion duration, adding incremental revenue per treatment episode. This market taxonomy clarifies where pricing power, volume potential, and clinical evidence thresholds differ across the Aphthous Ulcer Treatment landscape.