Experts advise caution regarding daily multivitamin use, stating they are generally safe but excessive intake of certain vitamins and minerals can be harmful. Studies suggest multivitamins offer little benefit to healthy adults, with perceived advantages often attributed to the placebo effect. Fatigue is a symptom with various causes, and targeted supplementation for specific deficiencies is more effective than general multivitamins. Consulting a doctor for diagnosis and treatment is recommended over blanket supplementation. Advice is also offered on improving sleep quality naturally.