If your blood pressure drops too low, the most important immediate steps are to sit or lie down, drink water, and use simple physical techniques to push blood back toward your heart and brain. A reading below 90/60 mmHg is generally considered low blood pressure (hypotension), but some people run low naturally without any problems. It becomes a concern when it causes symptoms like dizziness, blurred vision, or fainting.
Recognize the Symptoms
Many people with low blood pressure readings have no symptoms at all. When symptoms do appear, they typically include dizziness or lightheadedness, blurred or fading vision, fatigue, trouble concentrating, nausea, and fainting. These often hit hardest when you stand up quickly, after eating a large meal, or during prolonged standing.
There’s a more serious end of the spectrum. Extreme low blood pressure can reduce blood flow to your organs enough to cause shock, which is a medical emergency. Signs of shock include confusion (especially in older adults), cold and clammy skin, skin that looks noticeably paler than usual, rapid shallow breathing, and a weak, fast pulse. If you or someone near you shows these signs, call emergency services immediately.
What to Do Right Now
If you’re feeling dizzy or faint from low blood pressure, start with these steps:
- Sit or lie down. If you can, lie down and elevate your legs above heart level. This helps blood flow back from your legs toward your brain and core.
- Drink water. Fluids increase your blood volume, which raises pressure. Even one or two glasses can help in the short term.
- Eat something salty. A salty snack can give your blood pressure a quick bump by helping your body retain fluid.
- Try a counterpressure maneuver. These are simple muscle-tensing techniques that squeeze blood from your limbs back toward your heart. Cross your legs and squeeze your leg, abdominal, and buttock muscles. Or grip one hand with the other and pull them against each other without letting go. Hold either position until your symptoms fade.
Avoid standing up quickly once you feel better. Rise slowly, pausing at the edge of the bed or chair for a few seconds before getting fully upright.
Prevent Drops Throughout the Day
If low blood pressure is a recurring issue, several daily habits can keep your numbers more stable.
Stay well hydrated. A general target for people managing hypotension is 60 to 100 ounces of fluid per day, though your needs depend on your size, activity level, and climate. Water is ideal. One or two cups of caffeinated coffee or tea with breakfast can also help raise blood pressure in the morning, but caffeine itself is dehydrating, so don’t count it as your only fluid.
Increase your salt intake, carefully. The typical recommendation for people with chronic low blood pressure is 3 to 5 grams of salt per day, which is more than the standard dietary guidelines suggest. This only makes sense if your blood pressure is genuinely too low. Too much sodium can strain the heart, particularly in older adults, so get guidance on the right amount for your situation before loading up.
Eat smaller, lower-carb meals. Blood pressure often dips after eating because your body redirects blood flow to your digestive system. Large meals heavy in potatoes, rice, pasta, or bread make this worse. Eating smaller portions spread across the day keeps the post-meal drop more manageable.
Compression Stockings Help Blood Stay Where You Need It
Compression stockings apply gentle, graduated pressure to your lower legs, preventing blood from pooling there when you stand. They’re the same stockings used for varicose veins, and they work well for low blood pressure too.
Start with stockings rated at 20 to 30 mmHg of pressure. If those feel too tight or are hard to put on, drop down to 15 to 20 mmHg. If 20 to 30 doesn’t feel like enough, you can move up to 30 to 40 mmHg. Knee-high versions work for most people, though waist-high options provide more coverage. Put them on first thing in the morning before blood has a chance to settle in your legs.
Common Causes Worth Investigating
Low blood pressure isn’t always a standalone problem. It’s often a signal pointing to something else. Dehydration is the most common and most fixable cause, whether from not drinking enough, sweating heavily, vomiting, or diarrhea. Medications are another frequent culprit: blood pressure drugs, certain antidepressants, drugs for Parkinson’s disease, and medications that increase urine output can all push pressure too low. If your symptoms started or worsened after beginning a new medication, that connection is worth flagging.
Heart conditions that affect how quickly or effectively your heart pumps, hormonal problems like adrenal insufficiency or thyroid disorders, and significant blood loss can all cause hypotension. Pregnancy commonly lowers blood pressure in the first and second trimesters as the circulatory system expands rapidly. Prolonged bed rest also deconditions the body’s ability to regulate pressure when upright.
Orthostatic Hypotension: The Standing-Up Problem
The most common type of troublesome low blood pressure is orthostatic hypotension, where your pressure drops when you shift from sitting or lying down to standing. Normally your body compensates for gravity within a second or two by tightening blood vessels and slightly increasing heart rate. When that reflex is sluggish, blood pools in your legs and your brain briefly loses adequate flow.
Beyond the general tips above, a few targeted strategies help with this specific pattern. Rise in stages: sit at the edge of the bed for 30 seconds before standing. Place one foot on a chair or ledge and lean forward before walking, which encourages blood flow from the legs to the heart. Practice the counterpressure maneuvers (leg crossing, arm tensing, squeezing a rubber ball) whenever you feel the warning signs of a drop. Over time, these become second nature and can prevent most fainting episodes.
When Low Blood Pressure Needs Medical Attention
Occasional mild dizziness when you stand up too fast is common and usually harmless. But persistent symptoms that interfere with your daily life, repeated fainting, or blood pressure that keeps dropping despite hydration and lifestyle changes all warrant investigation. Your provider can check for underlying causes, review your medications, and determine whether your blood pressure pattern puts you at risk for falls or organ damage.
The emergency threshold is shock. Confusion, cold clammy skin, rapid shallow breathing, a weak fast pulse, and skin that’s gone noticeably pale are all signs that blood pressure has dropped dangerously low. This requires immediate emergency care, not home remedies.