If your blood pressure is running low, you can raise it through a combination of dietary changes, physical techniques, and lifestyle adjustments. Low blood pressure, generally defined as a reading below 90/60 mmHg, doesn’t always cause problems. But when it leads to dizziness, fainting, or fatigue, bringing those numbers up becomes a real priority.
Drink More Fluids
The simplest and fastest way to support your blood pressure is to increase your fluid intake. Blood pressure depends on blood volume, and blood volume depends heavily on hydration. When you’re even mildly dehydrated, your blood vessels carry less fluid, and pressure drops. Healthy adults generally need 11.5 to 15.5 cups (2.7 to 3.7 liters) of total fluid per day from all sources, including food. If you’re prone to low blood pressure, aiming for the higher end of that range can make a noticeable difference, especially in hot weather or after exercise.
Water works well on its own, but combining it with electrolytes (particularly sodium) amplifies the effect because salt helps your body retain fluid rather than just passing it through.
Increase Your Salt Intake
This is one of the few situations where eating more salt is genuinely good advice. For most people with low blood pressure, especially those who feel dizzy when standing, increasing dietary sodium helps the body hold onto more water, expanding blood volume and raising pressure.
How much salt you need depends on the severity of your condition. For people with orthostatic disorders (where blood pressure drops upon standing), medical guidelines from several cardiology societies recommend 4,000 to 4,800 mg of sodium per day, which translates to roughly 10,000 to 12,000 mg of table salt. That’s significantly more than the 2,300 mg sodium limit recommended for the general population. One clinical study found that adding about 2,400 mg of sodium per day for two months improved both blood pressure regulation and blood flow to the brain in people with fainting episodes.
A practical approach is adding 1,000 to 2,000 mg of sodium to your diet three times per day. You can do this by salting your food more liberally, eating salty snacks like pickles or olives, or using electrolyte drinks and salt tablets. If you have heart or kidney problems, talk with your doctor before significantly increasing salt, since the usual restrictions may still apply to you.
Use Physical Counter-Pressure Maneuvers
When you feel your blood pressure dropping in the moment, specific body movements can push it back up within seconds. These work by squeezing blood from the large muscles in your legs and abdomen back toward your heart, increasing the amount of blood available to pump. Clinical trials have confirmed that these maneuvers can raise blood pressure enough to prevent or stop a fainting episode.
Techniques that work well include:
- Crossing your legs and squeezing your thighs together while standing
- Clenching your abdominal and buttock muscles at the same time
- Squatting down briefly if you feel lightheaded
- Marching in place or rising onto your tiptoes to activate your calf muscles
- Pumping your calf muscles before sitting up from a lying position
These are especially useful in situations where you can’t sit down right away, like standing in line or getting out of bed in the morning.
Change How You Stand Up
If your blood pressure tends to drop when you change positions, the way you get up matters more than you might think. Moving slowly from lying to sitting, then pausing for a full minute on the edge of the bed before standing, gives your cardiovascular system time to adjust. Jumping straight to your feet forces your heart to compensate instantly, and when it can’t keep up, you get that familiar wave of dizziness or tunnel vision.
Sleeping with the head of your bed elevated by a few inches also helps. This slight tilt reduces the dramatic pressure shift that happens when you go from fully horizontal to upright in the morning. You can prop up the head of the bed frame with blocks or use a wedge pillow.
Wear Compression Garments
Compression stockings and abdominal binders prevent blood from pooling in your legs and midsection, which is one of the most common reasons blood pressure drops when you stand. For low blood pressure, the typical starting recommendation is 20 to 30 mmHg of compression. If that feels like too much, 15 to 20 mmHg is a gentler option. If it’s not enough, 30 to 40 mmHg provides firmer support, though these can be difficult to put on, particularly if you have flexible joints.
Waist-high stockings work better than knee-high ones because they compress a larger volume of tissue. Abdominal binders serve a similar purpose for the midsection. The key is wearing them during the day when you’re upright, not at night while sleeping.
Try Caffeine for a Short-Term Boost
A cup of coffee or tea can temporarily raise blood pressure by about 5 to 10 points in people who don’t consume caffeine regularly. The effect kicks in within 30 minutes and can last up to two hours. This makes caffeine a useful tool before activities where low blood pressure might be a problem, like a morning shower or a long period of standing. If you drink caffeine daily, however, tolerance builds and the blood pressure effect shrinks considerably. You can check whether caffeine works for you by measuring your blood pressure before and 30 to 120 minutes after a caffeinated drink.
Eat Smaller, More Frequent Meals
Large meals divert a significant amount of blood to your digestive system, which can cause blood pressure to drop noticeably for one to two hours after eating. This is called postprandial hypotension, and it’s particularly common in older adults. Switching to smaller, more frequent meals throughout the day reduces the size of that blood flow shift. Cutting back on refined carbohydrates at meals also helps, since high-carb foods tend to cause a more pronounced post-meal pressure drop than meals built around protein and fat.
Medications for Persistent Low Blood Pressure
When lifestyle changes aren’t enough, prescription medications can raise blood pressure more reliably. The most commonly prescribed option works by tightening blood vessels throughout the body, directly increasing vascular pressure. It’s typically taken three times daily during waking hours and not before bed, since blood pressure naturally rises when you lie down. Another common option helps the body retain sodium and water, expanding blood volume over time.
These medications are usually reserved for people whose low blood pressure significantly affects daily life, particularly those who faint repeatedly or can’t stand for normal periods. Your doctor would typically start at a lower dose and adjust based on how your blood pressure responds.
Warning Signs That Need Urgent Attention
Low blood pressure that causes mild dizziness on standing is common and usually manageable with the strategies above. But certain symptoms alongside low blood pressure suggest something more serious is happening. Confusion, cold or clammy skin, rapid shallow breathing, a weak and fast pulse, or fainting that doesn’t resolve quickly all point to blood pressure low enough to compromise organ function. Sudden drops in blood pressure can result from dehydration, blood loss, severe infection, or allergic reactions, and these situations need immediate medical care.