Low blood pressure, generally defined as a reading below 90/60 mmHg, can often be corrected through a combination of dietary changes, hydration, physical techniques, and in some cases medication. The right approach depends on whether your low blood pressure is chronic, happens when you stand up, or occurs after meals. Most people can raise their blood pressure meaningfully with lifestyle adjustments alone.
Increase Your Salt and Fluid Intake
Salt is the single most effective dietary tool for raising blood pressure. It works by helping your body hold onto more water, which increases blood volume and pushes pressure higher. For people with orthostatic hypotension (the kind that makes you dizzy when you stand), medical societies recommend significantly more sodium than the general population gets. The American Society of Hypertension suggests 2,400 to 4,000 mg of sodium per day for these patients, while some guidelines go as high as 4,000 to 8,000 mg daily. For context, the average American consumes about 3,400 mg per day, so even a modest increase may help.
A practical way to boost sodium is to add 1,000 to 2,000 mg of sodium to your diet three times per day, spread across meals. You can do this by salting food more liberally, eating salty snacks like pickles or olives, or using electrolyte drinks. If you have kidney disease or heart failure, this advice does not apply to you, as extra salt could cause serious harm.
Fluid intake matters just as much. Aim for 2 to 3 liters of water per day. Drinking water alone can acutely raise blood pressure. One study published in the American Heart Association’s journal Circulation found that water drinking improved the ability to tolerate standing upright even in healthy subjects. Keeping a water bottle with you throughout the day is one of the simplest interventions available.
Adjust How and What You Eat
If your blood pressure tends to drop after meals, your body is diverting too much blood to your digestive system. This is called postprandial hypotension, and it’s especially common in older adults. The fix involves changing your eating pattern rather than what you eat overall.
Eat six smaller meals throughout the day instead of three large ones. Keep those meals low in carbohydrates, since carbs trigger a bigger blood flow shift to the gut than protein or fat do. Drinking 12 to 16 ounces of water about 15 minutes before eating can also buffer the drop. A caffeinated beverage before breakfast or lunch helps some people, as caffeine temporarily constricts blood vessels and raises pressure.
Use Compression Garments
Compression stockings prevent blood from pooling in your legs, which is one of the main reasons blood pressure drops when you stand. They work by gently squeezing the veins in your lower body, pushing more blood back up toward your heart and brain.
Start with 20 to 30 mmHg compression, which provides firm support without being too difficult to put on. If that feels like too much, step down to 15 to 20 mmHg. If it’s not enough, 30 to 40 mmHg stockings are available. Waist-high versions are more effective than knee-high ones because they also compress the abdomen, where a large volume of blood can pool. Wearing them during the day and removing them at night is the standard approach.
Physical Maneuvers That Raise Pressure Fast
When you feel lightheaded or notice your vision dimming, certain body positions can raise blood pressure within seconds. These are called counterpressure maneuvers, and the American Heart Association recommends several of them as first-line responses.
- Cross your legs and squeeze. While standing or lying down, cross your legs and tense your leg, abdominal, and buttock muscles simultaneously. This pushes blood out of your lower body and back toward your heart.
- Squat down. Lowering into a squat compresses the blood vessels in your legs and raises pressure quickly. Tense your lower body and abdominal muscles while squatting, then stand up slowly once symptoms pass.
- Grip and pull. Interlock your fingers in front of your chest and pull your hands apart with maximum force. This isometric contraction raises blood pressure throughout your body.
- Clench your fists. Simply making a tight fist, with or without something in your hand, activates enough muscle tension to bump pressure upward.
These maneuvers are useful in the moment but don’t replace longer-term strategies. Think of them as emergency tools for when you feel a drop coming on, like when you’ve been standing in line or getting out of bed.
Everyday Habits That Help
Beyond the major interventions, several small daily habits can keep your blood pressure from dipping. Rise slowly from bed in the morning. Sit on the edge of the bed for 30 seconds before standing, and stand in place for another 30 seconds before walking. Avoid standing still for long periods. If you have to, shift your weight from one foot to the other or rise up on your toes repeatedly to activate your calf muscles.
Sleeping with the head of your bed elevated 10 to 20 degrees (about 4 to 6 inches) can help your body adjust to upright postures more smoothly during the day. This position reduces the amount of fluid your kidneys flush overnight, which helps maintain blood volume by morning. Avoid alcohol, which dilates blood vessels and lowers pressure. Hot showers and baths can also trigger drops, so keep the water warm rather than hot and limit your time.
Common Causes Worth Investigating
Low blood pressure is often a side effect of something else rather than a standalone problem. Medications are one of the most frequent culprits. Blood pressure drugs, antidepressants, drugs for Parkinson’s disease, and medications for prostate enlargement can all lower pressure beyond their intended target. If your symptoms started or worsened after beginning a new medication, that’s worth discussing with whoever prescribed it. Adjusting the dose or timing can sometimes resolve the issue entirely.
Dehydration is another common and easily fixable cause. So is prolonged bed rest, which deconditions your cardiovascular system and makes it harder to maintain pressure when upright. Heart conditions that reduce how much blood your heart pumps, hormonal imbalances involving the adrenal or thyroid glands, and nervous system disorders can all produce chronic low blood pressure. Addressing the root cause is always more effective than treating the symptom alone.
When Medication Is Needed
If lifestyle changes aren’t enough, prescription medications can help. The most commonly used drug for low blood pressure works by stimulating nerve endings in blood vessels, causing them to tighten and raising pressure as a result. It’s typically taken three times a day during waking hours, with the last dose no later than 6 p.m. to avoid raising pressure while you sleep. Another option helps your body retain sodium and water, increasing blood volume.
These medications are generally reserved for people whose low blood pressure significantly interferes with daily life, causing frequent falls, fainting, or an inability to stand for normal activities. They come with side effects and require monitoring, so most clinicians will exhaust lifestyle strategies first.
Signs of a Dangerous Drop
Most low blood pressure is a nuisance, not an emergency. But a sudden, severe drop can be dangerous. If you experience confusion, cold or clammy skin, rapid shallow breathing, a weak and fast pulse, or blurred vision that doesn’t clear quickly, those are signs your brain and organs aren’t getting enough blood flow. Fainting and being unable to recover quickly, or fainting repeatedly, also signals something more serious. A systolic pressure below 90 mmHg sustained for more than about 15 minutes is associated with organ damage in clinical settings, particularly to the kidneys and heart.