If your blood pressure reads below 90/60 mmHg and you’re feeling lightheaded, dizzy, or faint, the fastest things you can do are drink water, lie down with your legs elevated, and add salt to your next meal. Low blood pressure (hypotension) is only a problem when it causes symptoms, and most episodes can be managed at home with a few straightforward changes.
What to Do Right Now
When you feel the telltale signs of a blood pressure drop, dizziness, blurred vision, nausea, or that “graying out” feeling, your immediate goal is getting more blood flowing to your brain. Sit or lie down right away. If you can, lie flat and prop your feet up on pillows or the arm of the couch so they’re above your heart. This lets gravity do the work of pushing blood back toward your head and chest.
If you can’t lie down, try these counter-pressure techniques recommended by the Cleveland Clinic. They work by squeezing blood out of your legs and into your core circulation:
- Leg crossing: Cross one leg over the other and squeeze the muscles in your legs, abdomen, and buttocks. Hold until the dizziness passes.
- Arm tensing: Grip one hand with the other and pull them against each other without letting go, like a tug-of-war with yourself.
- Handgrip: Squeeze a rubber ball (or anything firm) in your dominant hand for as long as you can.
Practice these moves when you’re feeling fine so they become automatic when you need them.
Drink Water, and Not Just for Hydration
Reaching for a glass of water is the simplest intervention, but it does more than you might think. Beyond increasing blood volume, drinking water triggers a rapid rise in sympathetic nervous system activity, the same branch of your nervous system activated by caffeine. Research published in the American Heart Association’s journal Circulation found that drinking about 16 ounces of water raised levels of norepinephrine, a hormone that tightens blood vessels and pushes blood pressure up. This effect kicks in quickly, making water a surprisingly powerful tool during a low blood pressure episode.
Aim for steady water intake throughout the day rather than trying to catch up all at once. If you’re prone to drops after meals, drinking 12 to 18 ounces of water about 15 minutes before eating can blunt the post-meal dip.
Use Salt Strategically
Salt raises blood pressure. That’s why people with high blood pressure are told to avoid it, and exactly why it helps when your pressure runs low. Sodium pulls water into your bloodstream, increasing blood volume and giving your heart more to pump with each beat.
For people with orthostatic disorders (conditions where blood pressure drops on standing), medical guidelines suggest sodium intakes well above the general population’s recommendation. The American Society of Hypertension recommends 2,400 to 4,000 mg of sodium per day for these patients, while some specialists suggest as much as 4,000 to 8,000 mg daily depending on the condition. For context, the average American already consumes around 3,400 mg daily, and the general guideline is to stay under 2,300 mg. If you have low blood pressure, your target is likely higher, but the right number depends on your overall health, especially your heart and kidney function.
Practical ways to increase salt include adding it liberally to meals, snacking on salted nuts or olives, drinking broth, or using electrolyte drinks. Some people find salt tablets easier to manage consistently.
Adjust How You Eat
Blood pressure naturally dips after meals as your body redirects blood flow to your digestive system. Large meals, particularly carb-heavy ones, make this worse. Foods like white bread, white rice, potatoes, and sugary drinks pass quickly from the stomach to the small intestine, and this rapid transit amplifies the blood pressure drop.
Switching from three large meals to six or seven smaller ones spreads out the digestive demand and keeps your blood pressure more stable. Replace refined carbohydrates with slowly digested foods: whole grains, beans, protein, and healthy fats. These move through your system more gradually and cause less of a post-meal pressure dip. Harvard Health researchers note that this dietary pattern is one of the most effective non-drug strategies for people who regularly feel faint or dizzy after eating.
Prevent Drops When Standing Up
Orthostatic hypotension, the kind that hits when you stand up too fast, is the most common form of low blood pressure people deal with day to day. Blood pools in your legs when you’re sitting or lying down, and if your body doesn’t compensate quickly enough when you stand, your brain briefly loses adequate blood flow.
A few habits make a real difference. Get up in stages: sit on the edge of the bed for 30 seconds before standing, then stand still for another 30 seconds before walking. Avoid standing motionless for long periods, since your leg muscles normally help pump blood upward when you move. If you have to stand in one place, shift your weight, rise onto your toes, and tense your leg muscles periodically. Crossing your legs while standing and squeezing also helps push blood back toward your heart.
Mornings tend to be the worst time because blood pressure is naturally lower after a night of lying flat and mild overnight dehydration. Drinking a full glass of water before getting out of bed can help offset this.
Compression Stockings That Actually Work
Compression stockings prevent blood from pooling in your lower body by applying steady pressure to your veins, pushing blood upward. But not all compression garments are equally useful for low blood pressure.
Most experts in autonomic disorders recommend waist-high stockings rated at 20 to 30 mmHg or 30 to 40 mmHg of pressure. Waist-high matters because blood pools not just in your calves but throughout your thighs and abdomen. Knee-high stockings, the kind most commonly sold in pharmacies, help somewhat but miss a large portion of where pooling occurs. If waist-high stockings feel too uncomfortable or impractical, thigh-highs are a reasonable compromise, just less effective.
Put them on first thing in the morning before you get out of bed, since blood starts pooling the moment you stand. They take some getting used to, especially in warm weather, but many people with chronic low blood pressure find them the single most helpful daily intervention.
Common Causes Worth Knowing
Low blood pressure isn’t always a standalone problem. It’s often a side effect of something else. Dehydration is the most frequent culprit, whether from illness, heat, exercise, or simply not drinking enough. Medications are another major cause: blood pressure drugs (especially if the dose is too high), diuretics (water pills), certain antidepressants, drugs for Parkinson’s disease, and erectile dysfunction medications can all lower blood pressure as a primary or side effect.
Heart conditions like an unusually slow heart rate, heart valve problems, and heart failure can reduce the amount of blood your heart pumps with each beat, leading to chronically low pressure. Endocrine disorders, including adrenal insufficiency (Addison’s disease) and thyroid conditions, affect hormone levels that regulate blood pressure. Severe infections, allergic reactions, and significant blood loss cause dangerous, acute drops that require emergency care.
If your blood pressure is persistently low and you’re experiencing symptoms like ongoing fatigue, frequent dizziness, or fainting spells, it’s worth investigating whether an underlying condition or medication is responsible. Fixing the root cause often resolves the low blood pressure entirely.
Symptoms That Signal an Emergency
Most low blood pressure episodes are uncomfortable but not dangerous. However, a severe drop can lead to shock, which is a medical emergency. Warning signs include confusion or difficulty thinking clearly, cold and clammy skin that looks pale or bluish, rapid and shallow breathing, and a weak but fast pulse. If you or someone near you shows these symptoms, call emergency services immediately. Shock means vital organs aren’t getting enough blood, and it can become life-threatening quickly without treatment.
Fainting is another red flag, especially if it happens repeatedly or without warning. A single episode of lightheadedness after standing too fast is common and usually harmless. Losing consciousness, particularly during exercise or while sitting, points to something that needs evaluation.