Question: what to eat if you have very low blood pressure?
Answer: Drink Plenty of Fluids. When you're dehydrated, your blood volume is reduced, which causes your blood pressure to decrease. ... 
Eat Salty Foods. ... 
Drink Caffeine. ... 
Boost Your B12 Intake. ... 
Fill Up On Folate. ... 
Cut Back On Carbs. ... 
Reduce Meal Size. ... 
Easy On The Alcohol.