Herbs are supportive tools, not stand-alone treatments. The strongest evidence for improving fatigue still comes from sleep, nutrition, and regular activity. Stimulatory botanicals (e.g., ginseng, green tea) may increase alertness in some people but can worsen palpitations, anxiety, or blood pressure. Calming herbs (e.g., chamomile, lemon balm) may improve sleep quality, indirectly supporting energy. If fatigue is driven by iron/B12 deficiency, thyroid issues, or other medical causes, herbs won’t be sufficient and may delay care. Also consider drug–herb interactions; consult a clinician or pharmacist before use.