Blood pressure below 90/60 mmHg is classified as low, and if yours regularly falls in that range and causes symptoms like dizziness, fatigue, or fainting, there are several effective ways to bring it up. The strategies range from simple dietary changes to physical techniques you can use in the moment when you feel lightheaded.
Increase Your Salt and Fluid Intake
Salt is the most straightforward tool for raising blood pressure. It helps your body hold onto water, which expands your blood volume and pushes pressure upward. For people with orthostatic hypotension (the kind where you get dizzy standing up), medical guidelines from cardiology societies recommend 4,000 to 4,800 mg of sodium per day, and some specialists go as high as 8,000 mg for severe cases. For context, the average American consumes about 3,400 mg daily, so this means intentionally adding salt to meals rather than restricting it. A practical approach is adding 1,000 to 2,000 mg of sodium to each of your three main meals through salted foods, broth, or salt tablets.
Water matters just as much. A study published in the American Heart Association’s journal Circulation found that drinking about 480 mL (roughly 16 ounces) of water raised seated blood pressure by 11 mmHg in older adults, and the effect was dose-dependent: 480 mL produced a stronger response than 240 mL. The mechanism isn’t simply about adding fluid volume to your bloodstream. Water triggers a spike in sympathetic nervous system activity, which tightens blood vessels and raises pressure. Drinking a full glass of water 15 to 20 minutes before standing up or before meals can meaningfully reduce lightheadedness.
Eat Smaller, Lower-Carb Meals
Blood pressure naturally dips after eating because your body diverts blood flow to your digestive system. Normally, your heart rate increases and blood vessels elsewhere tighten to compensate. When that compensation fails, you get postprandial hypotension, a drop in pressure after meals that can cause dizziness or even fainting, particularly in older adults.
The fix is structural. Eating six smaller meals instead of three large ones reduces the blood flow demand on your gut at any one time. Keeping those meals low in carbohydrates helps further, since carbs trigger the largest digestive blood flow shifts. Drinking 12 to 16 ounces of water before a meal provides a buffer. A cup of coffee before breakfast or lunch can also help, since caffeine temporarily raises blood pressure by 5 to 10 mmHg in people who don’t drink it regularly. Walking for 10 minutes after eating, rather than sitting still, helps redirect blood flow back toward your core and brain.
Use Physical Counter-Maneuvers
When you feel a dizzy spell coming on, specific muscle-tensing techniques can buy you time by squeezing blood from your legs and abdomen back toward your heart. These have been validated in clinical trials for preventing fainting episodes.
- Leg crossing with tensing: Cross your legs at the ankles while standing and simultaneously squeeze your thigh, buttock, and abdominal muscles. Hold for as long as needed.
- Hand grip: Squeeze a rubber ball or any firm object as hard as you can in your dominant hand. This raises pressure through a full-body vascular reflex.
- Arm tensing: Grip one hand with the other in front of your body and pull your arms apart while keeping them locked together, contracting both arms at once.
These techniques work best when you use them at the first sign of symptoms, not after you’re already feeling faint. They’re especially useful in situations you know trigger your symptoms, like standing in line, getting up from bed, or being in hot environments.
Wear Compression Stockings
Gravity pulls blood into your legs when you stand, and if your blood vessels don’t tighten enough to push it back up, your blood pressure drops. Compression stockings counteract this by physically squeezing the veins in your lower legs. Knee-length stockings rated at 15 to 20 mmHg of pressure provide meaningful benefit, and stockings rated at 20 to 30 mmHg are even more effective. Waist-high compression garments work best for orthostatic hypotension because they also prevent blood from pooling in the abdomen, but many people find knee-high stockings more practical for daily wear. If you sit for most of the day, higher-pressure stockings (20 to 30 mmHg) tend to provide the greatest benefit.
Limit Alcohol
Alcohol is one of the strongest triggers for low blood pressure episodes. It impairs your blood vessels’ ability to tighten when you stand up. In controlled testing, alcohol doubled the drop in systolic blood pressure during posture changes compared to placebo, dropping it by 14 mmHg instead of 7. The core problem is that blood vessels in the arms and legs simply fail to constrict after drinking, even when the body signals them to. If you’re prone to low blood pressure, even moderate alcohol consumption can make symptoms significantly worse, particularly when combined with standing, heat, or a recent meal.
Adjust Your Sleep and Standing Habits
How you transition from lying down to standing matters. Sleeping with the head of your bed elevated by 10 to 15 degrees (using a wedge or bed risers, not just extra pillows) helps your body maintain better blood volume regulation overnight. When you wake up, sit on the edge of the bed for a minute or two before standing. Drink water before getting up. These small adjustments reduce the morning blood pressure drop that catches many people off guard.
During the day, avoid standing motionless for long periods. If you have to stand in place, shift your weight, rise onto your toes, and use the leg-crossing technique described above. Hot showers and baths dilate blood vessels and can trigger sudden drops, so keeping water temperature moderate and sitting on a shower stool if needed are practical precautions.
When Low Blood Pressure Becomes Dangerous
Most chronic low blood pressure is more of a nuisance than a danger, but certain symptoms signal that your organs aren’t getting enough blood flow. Cold, clammy skin, rapid shallow breathing, a weak and fast pulse, confusion, and significant skin pallor together indicate shock, which requires emergency treatment. If you experience these symptoms, or if someone around you does, call emergency services immediately. Isolated occasional dizziness when standing is common and manageable. Persistent symptoms that interfere with daily life, or fainting episodes, warrant a medical workup to identify the underlying cause, since low blood pressure can stem from heart conditions, nervous system disorders, dehydration, or medications.