If your blood pressure drops below 90/60 mmHg and you’re feeling dizzy, lightheaded, or faint, the most important immediate steps are to sit or lie down, drink water, and eat something salty. Low blood pressure isn’t always a problem on its own. Some people naturally run low without any symptoms. But when it causes noticeable symptoms, there are reliable ways to bring it back up and prevent it from dropping again.
What to Do Right Now
If you’re feeling woozy or lightheaded, sit down or lie down immediately. If you can, elevate your legs above the level of your heart. This shifts blood from your lower body back toward your brain, which is what’s not getting enough flow when your pressure drops. Stay in this position until the symptoms pass.
While you’re resting, drink water. Dehydration is one of the most common reasons blood pressure drops, and even mild fluid loss can make a noticeable difference. A full glass or two of water can start raising your blood volume within minutes. If you haven’t eaten recently, have a small snack with some salt, since sodium helps your body hold onto fluid. Caffeinated coffee or tea can also give blood pressure a short-term boost, though you’ll want to follow it with more water since caffeine can be mildly dehydrating.
If you feel faint while standing and can’t sit down, there are physical maneuvers that can buy you time. Crossing your legs and squeezing your thigh muscles together raises blood pressure quickly by compressing blood vessels in your lower body. Clenching both fists hard or tensing your arm muscles works through the same mechanism. Squatting down is especially effective. Some people combine these: squatting first, then tensing their leg muscles as they stand back up, which prevents the pressure from dropping again the moment they’re upright.
Common Reasons Blood Pressure Drops
Knowing what caused the drop helps you prevent the next one. The most frequent culprits are straightforward:
- Dehydration. Fever, vomiting, diarrhea, heavy sweating, and not drinking enough water all reduce the volume of blood circulating in your body. Less volume means less pressure pushing blood to your brain.
- Standing up too fast. Called orthostatic hypotension, this happens when gravity pulls blood into your legs faster than your body can compensate. It’s especially common in older adults and people on blood pressure medications.
- Eating large meals. After a big meal, blood flow shifts to your digestive system. For some people, this diverts enough blood to cause a noticeable pressure drop, particularly with carb-heavy meals like pasta, rice, or potatoes.
- Heart conditions. Heart valve problems, heart failure, and an unusually slow heart rate can all reduce the force or volume of blood your heart pumps.
- Hormonal conditions. Adrenal insufficiency (Addison’s disease), low blood sugar, and diabetes can all interfere with the body’s ability to maintain stable blood pressure.
Medications That Lower Blood Pressure
A surprisingly long list of medications can cause or worsen low blood pressure, and many of them aren’t blood pressure drugs at all. The obvious ones are diuretics (water pills), beta-blockers, and other heart medications. But antidepressants, particularly older tricyclics and some SSRIs, can lower blood pressure by relaxing blood vessels or interfering with the reflexes that keep pressure stable when you stand. Antipsychotic medications, benzodiazepines (anti-anxiety drugs), opioid painkillers, Parkinson’s medications like levodopa, and even some drugs used for enlarged prostate (alpha-blockers) all share this side effect.
If your low blood pressure started around the same time you began a new medication, or got worse after a dose change, that connection is worth flagging to whoever prescribed it. Adjusting the dose or timing can often fix the problem without switching drugs entirely.
Longer-Term Strategies That Help
If low blood pressure is a recurring issue rather than a one-time episode, there are daily habits that make a real difference.
Increasing your salt intake is one of the most effective strategies, and it’s one of the few situations where doctors actually recommend eating more sodium. For people with orthostatic hypotension (the type triggered by standing), expert guidelines from the American Society of Hypertension suggest 2,400 to 4,000 mg of sodium per day, and some recommendations for more severe cases go as high as 4,000 to 8,000 mg. For context, the average American already eats about 3,400 mg daily, so for mild cases you may just need to stop avoiding salt rather than actively loading up on it. That said, more salt isn’t safe for everyone, particularly if you have kidney disease or heart failure, so this is a change worth discussing with your doctor first.
Drinking more water throughout the day keeps your blood volume up. Eating smaller, more frequent meals instead of three large ones helps avoid the post-meal blood pressure dip. Cutting back on refined carbohydrates at each meal (less bread, pasta, rice, potatoes) reduces that effect further.
Compression stockings are another practical tool. They squeeze the veins in your legs, pushing more blood back up toward your heart and brain. They’re the same stockings used for varicose veins, available at most pharmacies without a prescription. Knee-high versions help, but waist-high ones are more effective for blood pressure specifically.
Physical Habits That Prevent Drops
If you tend to get dizzy when you stand up, small changes in how you move can make a big difference. Rise slowly from sitting or lying positions. Sit on the edge of the bed for 30 seconds before standing in the morning. Clench your thigh and calf muscles a few times before you get up, which pre-loads your circulation.
Avoid standing still for long periods. If you have to stand in line or at a counter, shift your weight, rise onto your toes, or march gently in place. These small muscle contractions pump blood upward and prevent it from pooling in your legs. Crossing your legs while standing and squeezing is a discreet option that works well in public.
When Low Blood Pressure Is an Emergency
Low blood pressure by itself is usually manageable, but it can signal something serious when it comes on suddenly or severely. The warning signs that your body isn’t getting enough blood flow include cold, clammy, or pale skin; a rapid or weak pulse; shallow, fast breathing; confusion or difficulty thinking clearly; and producing little or no urine. These are signs of shock, which means your organs are being starved of oxygen.
Chest pain, severe abdominal pain, high fever with a blood pressure drop, or sudden weakness on one side of the body all warrant calling emergency services. The same goes for a blood pressure drop after an injury, after starting a new medication, or alongside an allergic reaction. In these situations, lying flat with legs elevated is the right first step while waiting for help.