If your blood pressure runs low and you’re looking for ways to bring it up without medication, several practical strategies can help. Most involve increasing blood volume, preventing blood from pooling in your legs, and making small dietary shifts. These approaches are commonly recommended for people with orthostatic hypotension (feeling dizzy when standing), postural tachycardia syndrome, or chronically low readings that cause symptoms like fatigue and lightheadedness.
Increase Your Salt Intake
Salt is the most direct dietary tool for raising blood pressure. Sodium pulls water into your bloodstream, expanding blood volume and increasing the pressure in your vessels. While most health messaging tells people to cut salt, the opposite advice applies if your blood pressure is too low.
For people with orthostatic disorders, medical guidelines typically recommend between 2,400 and 4,000 mg of sodium per day. The Canadian Cardiovascular Society and a Heart Rhythm Society expert consensus both suggest around 4,000 mg daily, which is roughly double what the average American is told to aim for. Some specialists prescribe even higher amounts, up to 8,000 mg per day, for severe orthostatic hypotension. A practical starting point is adding 1,000 to 2,000 mg of sodium to your diet three times per day through saltier foods or salt tablets.
In one study, people who fainted from standing and had low urinary sodium levels saw meaningful improvements in orthostatic tolerance, blood vessel control, and brain blood flow regulation after two months of adding roughly 2,400 mg of supplemental sodium per day. Easy ways to increase salt at home include adding extra table salt to meals, eating broth-based soups, pickles, olives, salted nuts, and cheese.
Drink More Water
Dehydration is one of the most common and fixable causes of low blood pressure. When your blood volume drops, there’s simply less fluid for your heart to push through your vessels, and pressure falls. Aiming for 2 to 3 liters of fluid per day is a standard recommendation for people prone to low blood pressure or fainting episodes.
Water does more than just add volume. Research published in the American Heart Association’s journal Circulation found that drinking water triggers a chain of nervous system responses: it increases the release of norepinephrine (a hormone that tightens blood vessels), boosts sympathetic nerve signals to the legs, and improves the brain’s ability to maintain stable blood flow across a wider range of blood pressure values. In practical terms, this means drinking a large glass of water can help your body handle standing up without the dizziness or lightheadedness that comes with a sudden pressure drop.
Try drinking a full glass of water 15 to 30 minutes before standing up from a prolonged sitting or lying position, especially first thing in the morning when blood pressure tends to be lowest.
Eat Smaller, Lower-Carb Meals
Blood pressure commonly drops after eating, a condition called postprandial hypotension. Your body diverts blood to the digestive tract to process a meal, which can leave less circulating volume for the rest of your body. Large, carbohydrate-heavy meals make this worse because carbs require more blood flow to digest.
Two changes help: eat six smaller meals throughout the day instead of three large ones, and keep each meal relatively low in carbohydrates. Swapping a big plate of pasta for a smaller portion of protein, vegetables, and healthy fats reduces the post-meal blood pressure dip significantly. If you notice you feel lightheaded or foggy after lunch, this pattern is likely part of the problem.
Use Compression Garments
When blood pools in your legs and abdomen, less of it returns to your heart, and your blood pressure drops. Compression stockings and abdominal binders physically squeeze these areas to push blood back into central circulation.
For low blood pressure, look for graduated compression stockings rated at 20 to 30 mmHg, which is the level specifically indicated for orthostatic hypotension. These are available without a prescription at most pharmacies and medical supply stores. Waist-high stockings work better than knee-high ones because they also compress the thighs, where a significant amount of blood can pool. Abdominal binders provide additional benefit by compressing the large venous reservoirs in the abdomen.
Put them on before getting out of bed in the morning, when the effect of gravity on blood pooling hasn’t started yet. They can be uncomfortable in warm weather, but the benefit for people with symptomatic low pressure is often substantial.
Try Physical Counter-Maneuvers
Simple muscle-tensing techniques can raise your blood pressure quickly when you feel a dizzy spell coming on. Crossing your legs while standing and squeezing your thigh muscles together is one of the most studied maneuvers. Research in the Journal of Clinical Nursing found that leg crossing raised systolic blood pressure by about 10 mmHg and diastolic by about 8 mmHg. That’s a meaningful bump when you’re on the edge of lightheadedness.
Other effective maneuvers include:
- Squatting: Compresses leg veins and rapidly returns blood to the heart. Useful if you feel faint in a store or kitchen.
- Clenching your fists repeatedly: Activates the sympathetic nervous system and increases vascular tone.
- Tensing your abdominal muscles: Prevents blood from pooling in the gut, similar to what an abdominal binder does mechanically.
- Marching in place: Uses your calf muscles as a pump to push blood upward against gravity.
These are short-term fixes, not permanent solutions, but they can prevent a faint or fall in the moment.
Drink Caffeine Strategically
Caffeine raises blood pressure by constricting blood vessels and stimulating the heart. A meta-analysis of eight studies found that caffeine supplementation increased systolic blood pressure by about 2 mmHg and diastolic by about 1.7 mmHg on average. That’s a modest effect, but for someone whose pressure is borderline, a cup of coffee or tea before a meal or before standing for a long period can provide a helpful boost.
The effect is most pronounced if you don’t drink caffeine regularly, since your body builds tolerance. Timing matters too: having coffee with breakfast can help offset the morning low-pressure window, and a cup before lunch may blunt a postprandial dip. Doses above 400 mg per day (roughly four cups of coffee) showed stronger effects on diastolic pressure in the research, though that level of caffeine isn’t comfortable or advisable for everyone.
Adjust How You Sleep and Stand
Elevating the head of your bed slightly at night helps your body maintain better blood pressure regulation when you stand up in the morning. Use extra pillows or raise the mattress at the head end. This works by reducing the overnight shift of fluid to your upper body, which triggers your kidneys to excrete it. When you keep more fluid in circulation overnight, you start the morning with higher blood volume.
How you get out of bed matters as well. Sit on the edge of the bed for 30 seconds to a minute before standing. Flex your feet and calves a few times while sitting to get blood moving. When you do stand, have something sturdy nearby to hold onto. This staged approach gives your cardiovascular system time to adjust to the change in posture rather than demanding an instant response.
Signs That Need Emergency Attention
Most low blood pressure is manageable at home, but certain symptoms indicate your body is losing the ability to compensate. Confusion (especially in older adults), cold and clammy skin, noticeable paleness, rapid shallow breathing, or a weak and rapid pulse are signs of shock, which is a medical emergency. If you or someone near you develops these symptoms, call emergency services immediately rather than attempting home remedies.