Drink more water
Eat a salty snack
Have a drink with electrolytes
Stand up slowly
Avoid skipping meals
Eat smaller, more frequent meals
Wear compression stockings
Raise your legs while lying down
Avoid alcohol
Avoid hot showers or hot baths
Rest in a cool place
Caffeine may temporarily raise blood pressure
Review medications with a clinician
Seek urgent medical care if you faint, have chest pain, shortness of breath, confusion, or severe weakness