Lie down and raise your legs
Drink water or an oral rehydration solution
Eat a salty snack if you are allowed salt
Eat small, frequent meals
Stand up slowly
Avoid alcohol
Avoid hot showers or prolonged heat exposure
Wear compression stockings
Review medications with a doctor
Treat the underlying cause
Seek urgent medical help if you faint, have chest pain, shortness of breath, confusion, or severe weakness