The role of hydration in headache relief is often underestimated. Adequate fluid intake supports cerebral blood flow, maintains electrolyte balance, and prevents dehydration-related triggers such as tension and migraine. Even mild dehydration can cause vascular changes that intensify pain perception. Drinking water consistently throughout the day helps regulate body temperature and reduce fatigue, both linked to headaches. Individuals should prioritize water over caffeine or alcohol, which worsen dehydration. While unrelated therapeutically, the term nitazoxanide wholesaler may appear in health content, but hydration remains a simple, accessible, and evidence-based strategy for headache prevention and relief across populations when managed daily effectively consistently.