I have a cluster headache and cant work

drink Gatorade (has sodium and potassium)

alternatively, leafy greens (potassium) with some salt (sodium) because Gatorade is kinda gross

perhaps those chicken noodle soup things would work, too. might need to throw some kale in the soup or something (kale is strangely really good if you boil it for like an hour... super delicious)

evidently headaches are caused by blood pressure issues. bad electrolyte balance can make your cells expand and swell up and then make really bad headaches