If your blood pressure drops below 90/60 mmHg and you’re feeling dizzy, lightheaded, or faint, there are several things you can do right away to bring it back up. Some are as simple as changing your position or drinking a glass of water. Others involve longer-term habits like adjusting what you eat and when. The right approach depends on whether your low blood pressure is a sudden episode or an ongoing pattern.
What to Do Right Now
If you feel lightheaded or woozy while standing, don’t just wait it out. Cross your thighs like a pair of scissors and squeeze them together. Or place one foot on a chair or ledge and lean forward as far as you can. Both of these moves push blood from your legs back toward your heart, which can raise your pressure within seconds.
If you can, sit or lie down. Lying flat with your legs slightly elevated helps blood return to your core and brain. Drink water right away. Even mild dehydration lowers blood volume, which directly drops your pressure. A full glass or two can make a noticeable difference within 15 to 20 minutes.
When you’re ready to stand again, do it slowly. Move from lying to sitting, pause, then go from sitting to standing. Rushing that transition is one of the most common triggers for a pressure drop, because your body needs a moment to adjust. Avoid sitting with your legs crossed, which restricts blood flow back to the heart.
Why Blood Pressure Drops in the First Place
Your body has a built-in system for keeping blood pressure stable. Special nerve endings in your artery walls, called baroreceptors, constantly monitor how much your blood vessels are stretching. When you stand up, gravity pulls blood downward and the stretch decreases. Your brain detects this within a heartbeat and responds by tightening blood vessels and speeding up your heart rate to push pressure back up.
When this system works well, you barely notice the transition from sitting to standing. When it doesn’t, blood pools in your legs and your brain temporarily loses adequate blood flow. That’s what causes the lightheadedness, tunnel vision, or feeling like you might pass out. This reflex can be weakened by aging, dehydration, prolonged bed rest, or certain medical conditions affecting the nervous system.
Medications That Can Lower Your Pressure
Several common drug classes are known to cause or worsen low blood pressure. Diuretics (water pills) reduce fluid volume in your blood vessels, which can leave your system without enough pressure to compensate when you stand. Beta-blockers slow the heart rate, which can blunt your body’s ability to raise pressure quickly. Research from the large ALLHAT trial found that both diuretics and beta-blockers are contributors to drops in blood pressure upon standing, increasing the risk of falls and fainting in older adults. Even calcium channel blockers like amlodipine were linked to a higher risk of falls within the first year of use.
If you’re taking blood pressure medication and regularly feeling dizzy, that’s worth a conversation with whoever prescribed it. The timing of your dose can also matter. Some people benefit from shifting their blood pressure medication to later in the day rather than taking it in the morning, especially if symptoms are worst in the first few hours after waking.
How to Manage Low Blood Pressure Day to Day
Increase Your Salt and Fluid Intake
For most health conditions, people are told to eat less salt. Low blood pressure is the exception. Salt helps your body retain fluid, which increases blood volume and raises pressure. Some health systems recommend at least 6 grams of salt per day for people with low blood pressure, roughly double what’s typically advised for the general population. You can add salt to meals, eat salty snacks, or use electrolyte drinks. Pair the extra salt with plenty of water so your body can actually use it to expand blood volume.
Wear Compression Stockings
Compression stockings apply steady pressure to your legs, preventing blood from pooling there when you stand. For low blood pressure and related conditions, experts typically recommend waist-high stockings rated at 20 to 30 mmHg or 30 to 40 mmHg of pressure. Knee-high stockings help somewhat, but waist-high versions are more effective because they cover the full length of the veins where blood tends to collect. They work best when put on first thing in the morning before you get out of bed, since that’s when your legs have the least swelling.
Be Careful After Meals
Blood pressure often drops after eating because your body diverts blood flow to your digestive system. This is called postprandial hypotension, and it’s especially common in older adults. Large meals high in carbohydrates cause the biggest drops.
A few strategies can help. Eat smaller, more frequent meals (six small ones instead of three large ones) and keep carbohydrates moderate at each sitting. Drink 12 to 16 ounces of water about 15 minutes before a meal, which pre-loads your blood volume before the digestive system starts pulling blood away. A short 10-minute walk after eating also helps keep blood circulating. Some people find that a caffeinated drink before breakfast or lunch helps stabilize their pressure during the meal. If symptoms are severe after eating, lying down for a while afterward can help.
Red Flags That Need Immediate Attention
Low blood pressure that causes occasional mild dizziness is common and usually manageable. But a sudden, severe drop can signal something more dangerous. If you or someone around you has cold, clammy skin, rapid or shallow breathing, confusion, a weak and fast pulse, or bluish skin tone, that combination points toward shock, which is a medical emergency. Fainting and not waking up quickly, or fainting repeatedly, also warrants a call to emergency services. Severe blood loss from an injury, a serious allergic reaction, or a severe infection can all cause blood pressure to plummet dangerously.
Patterns Worth Tracking
If low blood pressure is a recurring issue for you, it helps to notice when and where it happens. Does it strike mostly in the morning? After meals? After standing for long periods? After exercise? The pattern often points directly to the cause and the best fix. Keeping a simple log of your readings alongside what you were doing at the time gives you and your doctor something concrete to work with, rather than relying on memory alone.
A basic home blood pressure cuff can be useful here. Take readings at different times of day, and compare sitting versus standing measurements. If your systolic number (the top number) drops by 20 points or more within three minutes of standing, that’s a clear sign of orthostatic hypotension, which is one of the most treatable forms of the condition.