Low blood pressure, generally defined as a reading below 90/60 mmHg, can be raised through a combination of dietary changes, hydration, physical strategies, and in some cases medication. Most people with mildly low blood pressure can manage it effectively at home by adjusting a few daily habits.
Increase Your Salt and Fluid Intake
Salt helps your body retain water, which increases blood volume and pushes pressure up. Most health advice focuses on limiting sodium, but if your blood pressure runs low, you may need at least 6 grams of salt per day. That’s roughly one teaspoon of table salt, spread across your meals and snacks. Adding salt to food, eating salted nuts or olives, or sipping broth throughout the day are easy ways to hit that target.
Dehydration is one of the most common and fixable causes of low blood pressure. Drinking water has a surprisingly fast effect: even about 16 ounces (roughly 480 mL) consumed quickly can raise blood pressure within minutes. Aim for consistent hydration throughout the day rather than catching up all at once. If you tend to feel lightheaded in the morning, drinking a full glass of water before getting out of bed can help.
Eat Smaller, More Frequent Meals
Blood pressure often drops after eating, a phenomenon called postprandial hypotension. Here’s why: after a meal, your body redirects blood flow to your digestive system. Normally, your heart rate increases and blood vessels elsewhere tighten to compensate. But if that compensation is sluggish, your blood pressure falls. Large meals make this worse because they demand more blood flow to the gut all at once.
Switching from three large meals to six smaller ones spreads out the digestive workload and reduces those post-meal dips. Cutting back on refined carbohydrates at each meal also helps, since carb-heavy meals tend to cause the steepest drops.
Use Physical Counter-Pressure Maneuvers
When you feel a dizzy spell coming on, certain body positions can buy you time by squeezing blood back toward your heart and brain. The American Heart Association recommends several of these:
- Cross your legs and squeeze. While standing or lying down, cross your legs and tense your leg, abdominal, and buttock muscles simultaneously.
- Squat down. Lowering into a squat compresses the blood vessels in your legs and forces blood upward. Tense your lower body and abdominal muscles while you hold the position, then stand slowly once the dizziness passes.
- Grip and pull. Hook your fingers together in front of your chest and pull your arms in opposite directions with maximum force. This engages your upper body muscles and temporarily raises pressure.
- Clench your fists. Squeeze as hard as you can, with or without something in your hand. Even this simple isometric contraction helps.
These maneuvers work best as an immediate response to lightheadedness, not as a long-term fix. But they can prevent a faint if you feel one coming.
Try Compression Garments
Compression stockings and abdominal binders prevent blood from pooling in your lower body, which is a major contributor to lightheadedness when you stand. Start with 20 to 30 mmHg pressure, which provides firm support without being too difficult to pull on. If that feels like too much, step down to 15 to 20 mmHg. If it’s not enough, 30 to 40 mmHg options are available.
Waist-high stockings or compression leggings tend to produce the best results because they cover both the legs and the abdomen. Knee-high socks help if your symptoms are mild, but they leave the thigh veins uncompressed, where a lot of blood can still pool. For maximum benefit, some people pair waist-high leg compression with an abdominal compression vest or shapewear.
Adjust How You Sleep and Stand
Many people with low blood pressure feel worst first thing in the morning. Elevating the head of your bed by about 9 inches (roughly a 10-degree tilt) can help. This position keeps your body lightly working against gravity overnight, which trains your blood vessels to maintain better tone and reduces the sudden pressure drop when you finally get upright. You can use a foam wedge under the mattress or place blocks under the bed legs at the headboard end.
When getting up, move in stages. Sit on the edge of the bed for 30 seconds before standing. Once standing, pause before walking. If you’ve been sitting for a long time, flex your calf muscles a few times before you rise. These small delays give your cardiovascular system time to adjust.
When Lifestyle Changes Aren’t Enough
If dietary and physical strategies don’t control your symptoms, medications are available. The usual first-line prescription works by helping your body retain salt and water, expanding your blood volume from the inside. If that alone isn’t sufficient, a second type of medication can be added that tightens blood vessels directly, increasing the resistance that keeps pressure up. This class of drug is typically taken three times a day, with the last dose at least four hours before bed to avoid raising blood pressure too high while you’re lying down.
These medications are generally reserved for people with significant symptoms that interfere with daily life, and only after other causes (like dehydration, medication side effects, or underlying conditions) have been ruled out.
Symptoms That Signal Something More Serious
Mildly low blood pressure without symptoms is usually harmless. But certain signs suggest your blood pressure has dropped to a dangerous level: fainting or near-fainting, confusion, blurred vision, cold and clammy skin, rapid shallow breathing, or chest pain. A sudden drop in blood pressure, especially one that doesn’t improve with fluids and rest, can indicate internal bleeding, a severe infection, or a heart problem that needs immediate medical attention.