Nootropic Supplement Market Size and Forecasts (2021 - 2031), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage : by Type (Capsules & Tablets, Powder, Liquid); Ingredient Type (Natural, Synthetic); Function (Memory enhancement, Mood and Stress management, Attention and Focus, Sleep enhancement, Anti-aging); Distribution Channel (Hypermarkets/supermarkets, Specialty stores, Pharmacies); and Geography (North America, Europe, Asia Pacific, and South and Central America)