The Types dimension of the market taxonomy classifies mood‑enhancing supplements into distinct chemical and botanical families, each with identifiable sub‑categories. Herbal extracts include adaptogens (e.g., ashwagandha, rhodiola) and serotonergic herbs (e.g., St. John’s wort). Amino acids cover precursors such as L‑theanine, 5‑HTP, and taurine that modulate neurotransmitter synthesis. Vitamins & minerals comprise B‑complex complexes, vitamin D, and magnesium, which support neurochemical stability. Probiotics feature specific strains (e.g., Lactobacillus rhamnosus) linked to the gut‑brain axis. Synthetic compounds consist of patented molecules like phenibut or selective serotonin reuptake modulators formulated for over‑the‑counter use. Each type contributes to the overall market by addressing different mechanistic pathways, influencing formulation strategies, pricing tiers, and regulatory scrutiny. This granular classification enables analysts to trace growth patterns back to scientific rationale rather than generic marketing claims.