Nugenix Thermo is formulated as a comprehensive thermogenic and energy supplement, featuring a blend of well-known metabolism-boosting ingredients such as various forms of caffeine, green tea extract, cayenne, and Coleus forskohlii. The total caffeine content is notably high, providing a significant energy rush and promoting thermogenesis, which aligns with its core promises of metabolism boost, weight loss, energy, and mental focus. However, the product's ambition to address a broad spectrum of health goals (including heart health, anti-aging, immunity, and testosterone support) is often not matched by effective dosages of relevant ingredients or the overall ingredient profile. For instance, the L-Carnitine dose is significantly below clinically effective levels, and Vitamin C is present in minimal amounts. While consumer reviews often highlight the energy benefits, the high stimulant load also carries potential side effects, making it less suitable for caffeine-sensitive individuals. From a nutritional perspective, it's a strong stimulant for short-term effects but lacks the comprehensive support for its broader claims, especially given its premium price per serving.