If your blood pressure consistently reads below 90/60 mmHg and you’re feeling dizzy, fatigued, or lightheaded, there are several effective ways to bring it up. Some work within minutes, others build over days and weeks. The right approach depends on whether you need a quick fix for symptoms hitting you right now or a longer-term strategy to keep your numbers stable.
Drink More Water, and Drink It Quickly
One of the fastest ways to nudge blood pressure upward is simply drinking water. In a study published in the American Heart Association’s journal Circulation, healthy subjects who drank about 16 ounces (500 mL) of water saw a measurable increase in blood pressure within 15 minutes, driven by an increase in peripheral resistance (the tightness of blood vessels). The effect isn’t dramatic, but it’s real and it’s fast.
The mechanism isn’t about expanding your blood volume. That 16-ounce glass only changes plasma volume by 1 to 2 percent. Instead, drinking water triggers a reflex that tightens blood vessels slightly. For people who tend to feel woozy when standing, making a habit of drinking a full glass of water 15 minutes before getting up from a long rest can make a noticeable difference.
Increase Your Salt Intake
For most health conditions, people are told to cut back on sodium. Low blood pressure is the exception. Salt helps your body retain fluid, which increases blood volume and pushes pressure up. Health experts suggest at least 6 grams of salt per day for people with low blood pressure, roughly double what’s recommended for the general population.
You can get there by salting your food more liberally, snacking on salted nuts or olives, or adding broth-based soups to your meals. If you have kidney problems or heart failure, this advice doesn’t apply to you, so check with your provider first.
Physical Techniques That Work in Seconds
When you feel a dizzy spell coming on, specific muscle-tensing maneuvers can prevent your blood pressure from dropping further and even push it back up. These are called counter-pressure techniques, and they work by squeezing blood out of your muscles and back toward your heart.
- Leg crossing: Cross one leg over the other and squeeze the muscles in your legs, abdomen, and buttocks. Hold until symptoms fade.
- Arm tensing: Grip one hand with the other and pull them against each other without letting go. Maintain the tension as long as you can or until the dizziness passes.
- Hand grip: Squeeze a rubber ball (or any firm object) in your dominant hand for as long as possible.
These techniques are especially useful if you tend to feel faint after standing up quickly. They buy your cardiovascular system time to adjust.
Eat Smaller, Lower-Carb Meals
Blood pressure naturally dips after eating because your body redirects blood flow to your digestive system. Normally, your heart rate increases and your blood vessels tighten elsewhere to compensate. But if those responses are sluggish, you get postprandial hypotension, a drop in blood pressure after meals that can leave you dizzy or unsteady.
Two changes help. First, eat six smaller meals throughout the day instead of three large ones. A smaller meal demands less blood flow to the gut, so the pressure drop is gentler. Second, reduce carbohydrates at each meal. High-carb meals cause the largest post-meal blood pressure drops because they require the most digestive effort. Swapping some of those carbs for protein or healthy fats keeps things more stable.
Wear Compression Garments
Gravity pulls blood into your legs when you stand, and if your blood vessels don’t constrict well enough to push it back up, your blood pressure falls. Compression stockings counteract this by physically squeezing your veins and preventing blood from pooling in your lower body.
For low blood pressure, the recommended pressure rating is 20 to 30 mmHg or 30 to 40 mmHg, and waist-high stockings work better than knee-high ones. The higher they go, the more blood they redirect back to your core. They’re not the most comfortable thing to wear, but many people with chronic low blood pressure find them transformative for getting through the day without lightheadedness.
Elevate the Head of Your Bed
This one sounds counterintuitive: raising the head of your bed by about 9 inches (a 10-degree tilt) can actually improve your blood pressure when you stand up in the morning. Here’s why. When you sleep completely flat, your body registers the even blood distribution as excess fluid and responds by producing more urine overnight. That fluid loss shrinks your blood volume, making the morning stand-up even harder on your blood pressure.
Sleeping with your head slightly elevated reduces that overnight fluid loss. You can achieve this with a foam wedge under the mattress or by placing blocks under the legs at the head of the bed. Stacking pillows doesn’t work as well because it bends your body at the waist instead of tilting it as a whole.
Cut Back on Alcohol
Alcohol has a complicated relationship with blood pressure. In the short term, it widens blood vessels and can cause significant drops, particularly when standing. Over time, alcohol can also damage the nerves that regulate blood pressure responses, leading to chronic orthostatic hypotension. The National Institute on Alcohol Abuse and Alcoholism notes that alcohol-related nerve damage is a direct cause of postural blood pressure drops.
If you’re already prone to low blood pressure, even moderate drinking can make symptoms worse. Reducing or eliminating alcohol is one of the simplest lifestyle changes with a meaningful payoff.
When Lifestyle Changes Aren’t Enough
For people whose low blood pressure doesn’t respond well to hydration, salt, and compression, prescription medication is an option. The most commonly prescribed drug for orthostatic hypotension works by stimulating receptors on blood vessel walls, causing them to constrict and increasing the resistance that blood flows against. This directly raises blood pressure. It’s typically taken two or three times a day and the dose is adjusted gradually over several weeks based on how your standing and lying blood pressure respond.
Medication is generally reserved for cases where low blood pressure significantly affects quality of life or causes fainting. Most people find that combining several of the strategies above (more water, more salt, compression stockings, smaller meals) provides enough improvement to manage day-to-day symptoms without medication.