Low blood pressure, generally defined as a reading below 90/60 mmHg, can usually be improved with a combination of dietary changes, physical techniques, and lifestyle adjustments. For most people, the fix involves increasing fluid and salt intake, wearing compression garments, and learning a few simple body maneuvers that raise blood pressure on the spot. If your low blood pressure is caused by a medication or an underlying condition, addressing that root cause is the most effective long-term solution.
Quick Fixes When You Feel Lightheaded
When dizziness or faintness hits, certain physical movements can raise your blood pressure within seconds. The American Heart Association recommends these counterpressure maneuvers:
- Cross your legs and squeeze. While standing or lying down, cross your legs and tense your leg, abdominal, and buttock muscles simultaneously. This pushes pooled blood back toward your heart.
- Drop into a squat. Lowering your body into a squat position compresses the blood vessels in your legs and forces blood upward. Tense your lower body and abdomen while squatting, then stand slowly once symptoms pass.
- Grip and pull. Clasp your hands together, interlocking your fingers, and pull your arms in opposite directions with maximum force. This isometric contraction raises blood pressure quickly.
- Clench your fist. Make a tight fist at full force, with or without gripping a small object. Hold for several seconds.
These techniques work because forcefully contracting large muscle groups squeezes blood out of the veins and into active circulation. They’re especially useful if you get dizzy when standing up, a pattern called orthostatic hypotension.
Increase Your Salt and Fluid Intake
Salt holds water in your bloodstream, which increases blood volume and raises pressure. For people with orthostatic disorders, medical guidelines recommend significantly more sodium than the general population typically consumes. The American Society of Hypertension suggests 2,400 to 4,000 mg of sodium per day for people with orthostatic hypotension, while some experts recommend up to 4,000 to 8,000 mg daily depending on severity. The Canadian Cardiovascular Society and a Heart Rhythm Society consensus statement both land around 4,000 to 4,800 mg per day.
For context, the average American consumes about 3,400 mg of sodium daily. If your intake is already in that range and you still have symptoms, adding 1,000 to 2,000 mg of supplemental sodium with each meal is a common clinical approach. One study found that adding roughly 2,400 mg of sodium per day for two months improved both standing tolerance and blood flow regulation in people who fainted from position changes.
Pair the extra salt with plenty of water. Aim for at least 2 to 3 liters of fluid daily. Without enough water, the extra sodium can’t do its job of expanding blood volume.
Wear Compression Garments
Compression stockings and abdominal binders prevent blood from pooling in your legs and belly when you stand. Studies on orthostatic hypotension have tested compression levels ranging from 15 to 40 mmHg, with pressures of 20 to 30 mmHg at the ankle being a common starting point. Higher compression (30 to 40 mmHg) tends to be more effective but can be harder to put on and less comfortable in warm weather.
Full-length stockings that reach the thigh or waist outperform knee-high versions because a large portion of blood pools in the thighs and abdomen, not just the calves. Abdominal compression binders, worn alone or with stockings, add another layer of support. If you find full-length stockings impractical, even knee-highs at 20 to 30 mmHg offer some benefit.
Prevent Blood Pressure Drops After Meals
Blood pressure commonly dips after eating because your body diverts blood flow to the digestive tract. This postprandial hypotension is especially common in older adults and can cause the same dizziness and faintness as standing too quickly. Two dietary shifts help prevent it: eat smaller meals more frequently (six small meals instead of three large ones), and keep carbohydrate content low. Carbohydrates trigger a stronger blood-flow shift to the gut than protein or fat, so reducing them at each sitting blunts the drop. If you can’t avoid a carb-heavy meal, your doctor may prescribe a medication that slows carbohydrate absorption specifically for those occasions.
Check Whether a Medication Is the Cause
Blood pressure medications are the most common drug-related cause of hypotension, particularly in older adults. Diuretics, beta-blockers, calcium channel blockers, and alpha-blockers can all push pressure too low, especially when you stand up. But blood pressure drugs aren’t the only culprits. Antidepressants, anti-anxiety medications, drugs for Parkinson’s disease, and even some prostate medications can lower blood pressure as a side effect.
If your symptoms started or worsened after beginning a new medication, or after a dose increase, that’s a strong clue. Don’t stop any prescription on your own, but bring the timing to your doctor’s attention. A dose adjustment or switch to a different drug in the same class often resolves the problem entirely.
Lifestyle Habits That Help Over Time
Beyond salt and fluids, a few daily habits can keep your blood pressure more stable. Elevating the head of your bed by 10 to 20 degrees (using bed risers, not extra pillows) reduces the hormonal shifts that cause morning dizziness. Getting up slowly, in stages, gives your cardiovascular system time to adjust. Sit on the edge of the bed for 30 seconds before standing, and stand in place for another 30 seconds before walking.
Regular exercise, particularly lower-body strength training, improves the muscle pump that pushes blood back to your heart. Swimming and recumbent cycling are good options if standing exercise triggers symptoms. Avoid prolonged standing in one position, hot showers, and alcohol, all of which dilate blood vessels and worsen low pressure.
When Low Blood Pressure Becomes Dangerous
Occasional lightheadedness on standing is common and usually manageable. But severely low blood pressure can progress to shock, which is a medical emergency. Warning signs include cool or clammy skin, skin that looks pale or ashen, a blue or gray tinge to the lips or fingernails, rapid shallow breathing, confusion or agitation, nausea, and extreme weakness. If you or someone near you shows these symptoms, call emergency services immediately. Shock means organs aren’t getting enough blood flow, and it requires urgent treatment.
Prescription Options for Persistent Cases
If lifestyle changes aren’t enough, doctors can prescribe medications that raise blood pressure directly. The most commonly used option works by tightening blood vessels, particularly veins, which reduces blood pooling in the legs and increases the pressure pushing blood back to the heart. It’s typically taken three times a day, with the last dose at least four hours before bedtime to avoid raising pressure too high while you’re lying down. Doctors usually start at a low dose and increase it weekly based on how your standing and lying blood pressure respond.
Another option is a medication that helps your kidneys retain sodium and water, expanding blood volume. This approach works well for people whose low pressure stems from inadequate blood volume rather than blood vessel tone. Both medications require monitoring, since the goal is to raise your standing blood pressure without pushing your resting pressure too high.