Low blood pressure, defined as a reading below 90/60 mmHg, is treated through a combination of lifestyle changes, dietary adjustments, physical techniques, and sometimes medication. The right approach depends on what’s causing the drop and how severe your symptoms are. Many people manage low blood pressure effectively without drugs at all.
Why the Cause Matters First
Before adding anything to raise your blood pressure, the most important step is figuring out why it’s low. Medications are one of the most common culprits. Blood pressure drugs, diuretics, antidepressants (especially older tricyclic types), antipsychotics, nitrates, and even Parkinson’s medications like levodopa can all push blood pressure too low. In these cases, treatment often means adjusting or switching the medication responsible rather than layering on something new.
Other causes include dehydration, blood loss, heart problems, infections, and endocrine disorders. Treating the underlying condition often resolves the low blood pressure on its own. If no reversible cause is found, or if symptoms persist after addressing one, the strategies below come into play.
Increasing Salt and Fluid Intake
For most people with chronically low blood pressure, especially the type that hits when you stand up (orthostatic hypotension), boosting salt and water intake is the first-line treatment. Salt helps your body retain fluid, which increases blood volume and raises pressure.
The recommended sodium intake for people with orthostatic hypotension is significantly higher than what’s advised for the general population. Guidelines from cardiology societies suggest 2,400 to 4,000 mg of sodium per day as a starting range, with some experts recommending up to 4,000 to 8,000 mg daily for more severe cases. For context, the typical dietary recommendation for healthy adults is under 2,300 mg. Your doctor can help determine the right target based on your symptoms and kidney function. A common practical approach is adding 1,000 to 2,000 mg of sodium to your diet three times per day through salted foods or salt tablets.
Fluid intake matters just as much. Drinking water consistently throughout the day keeps blood volume up. Some people find that drinking 12 to 16 ounces of water about 15 minutes before standing or before meals noticeably reduces dizziness.
Compression Garments
Compression stockings and abdominal binders work by squeezing blood out of the legs and abdomen and back toward the heart, which raises blood pressure in the upper body. They’re particularly helpful for orthostatic hypotension, where blood pools in the lower body when you stand.
Most people start with stockings rated at 20 to 30 mmHg of pressure. If that level feels too tight or is hard to pull on, 15 to 20 mmHg is a reasonable alternative. If 20 to 30 mmHg doesn’t provide enough relief, stepping up to 30 to 40 mmHg offers stronger compression, though these can be difficult to put on, particularly for people with joint hypermobility. Waist-high stockings or abdominal binders tend to work better than knee-high socks alone because they prevent blood from pooling in the thighs and abdomen.
Physical Techniques That Work Fast
When you feel lightheaded or sense that your blood pressure is dropping, specific muscle-tensing maneuvers can raise it within seconds. These counter-pressure techniques buy your body time and can prevent fainting.
- Leg crossing and tensing: Cross one leg over the other and squeeze the muscles in your legs, abdomen, and buttocks. Hold until the lightheadedness passes.
- Arm tensing: Grip one hand with the other and pull them against each other without letting go, like a sustained tug-of-war with yourself.
- Hand grip: Squeeze a rubber ball in your dominant hand for as long as you can or until symptoms fade.
A study in the Journal of the American College of Cardiology found these maneuvers effectively prevented fainting episodes in people prone to vasovagal syncope. They’re free, require no equipment (besides optionally a rubber ball), and can be done anywhere without drawing attention.
Managing Blood Pressure Drops After Meals
Some people experience their worst low blood pressure episodes right after eating, a condition called postprandial hypotension. Digestion diverts blood to the gut, and in some people the body fails to compensate, causing dizziness, fatigue, or even fainting 15 to 90 minutes after a meal. This is especially common in older adults.
Several practical changes can reduce these episodes. Eating six smaller meals instead of three large ones limits how much blood gets redirected at once. Keeping meals low in carbohydrates helps because carbs trigger the largest blood pressure drops. Drinking 12 to 16 ounces of water before eating can preload your blood volume. A short walk of about 10 minutes after meals keeps blood circulating rather than pooling. Some people also benefit from having a caffeinated drink before breakfast or lunch, since caffeine temporarily constricts blood vessels. Lying down after eating is another option if walking isn’t practical.
Other Lifestyle Adjustments
Beyond diet and compression, a few daily habits make a meaningful difference. Changing positions slowly, particularly when going from lying down to standing, gives your cardiovascular system time to adjust. Sleeping with the head of your bed elevated a few inches (using blocks under the bedposts, not just extra pillows) can reduce morning drops in blood pressure by keeping your body accustomed to a mild gravitational challenge overnight. Avoiding prolonged standing, hot baths, and alcohol all help prevent episodes.
When Medication Is Needed
If lifestyle measures aren’t enough, two medications are commonly prescribed for chronic low blood pressure.
The first works by helping your kidneys retain sodium, which increases blood volume. It’s typically started at a low dose and increased gradually on a weekly basis if needed. It’s used alongside a high-salt diet and adequate fluids, not as a replacement for them. Doses above a certain threshold don’t provide additional benefit and increase the risk of side effects like swelling and low potassium.
The second medication works by tightening blood vessels directly. It’s usually taken up to three times daily and starts at a low dose that can be increased based on standing and lying blood pressure readings. One important rule: the last dose of the day needs to be taken at least four hours before bedtime. Because the drug raises blood pressure by constricting blood vessels, lying flat while it’s active can push pressure dangerously high.
Emergency Treatment for Severe Drops
A sudden, severe drop in blood pressure, from causes like major bleeding, dehydration, severe infection, or an allergic reaction, is treated differently from chronic low blood pressure. In an emergency setting, the priority is restoring blood volume quickly with intravenous fluids. Adults typically receive about a liter of saline solution as an initial bolus, after which the medical team reassesses. If bleeding is the cause, blood products may be given as well. This type of acute treatment is distinct from the day-to-day management strategies above and is handled entirely in a clinical setting.