"Maca effectively reduces the buildup of metabolites, including blood urea nitrogen, blood lactic acid, and ROS levels. Also, Maca mitigates metabolic stress by elevating NAD+/NADH levels.
Through these, Maca may enhance energy metabolism within skeletal muscle, potentially promoting the generation and function of mitochondria101. Consequently, this may contribute to improving post-COVID-19 fatigue."
Medicinal Plants for the Management of Post-COVID-19 Fatigue: a Literature Review on the Role and Mechanisms

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