Low blood pressure, defined as a reading below 90/60 mmHg, can often be managed through a combination of dietary changes, physical techniques, compression garments, and sometimes medication. The right approach depends on what’s causing your blood pressure to drop and when it tends to happen, but most people can make meaningful improvements without prescriptions.
Quick Physical Techniques That Raise Blood Pressure Fast
When you feel lightheaded or dizzy from a blood pressure drop, certain body positions and muscle-tensing movements can push blood back toward your heart and brain within seconds. The American Heart Association recommends several of these “counterpressure maneuvers” as a first line of defense:
- Leg crossing with muscle tensing: Cross your legs and squeeze your leg, abdominal, and buttock muscles while standing or lying down.
- Squatting: Lower yourself into a squat, tense your lower body and abdominal muscles, and stay there until symptoms pass before slowly standing.
- Isometric handgrip: Grip your opposing hands with interlocked fingers and pull your arms in opposite directions with maximum force.
- Fist clenching: Make a tight fist at maximum contraction, with or without something in your hand.
These work because forcefully contracting large muscle groups squeezes blood out of your veins and back into circulation. They’re especially useful if your blood pressure tends to drop when you stand up, a pattern called orthostatic hypotension.
Increase Your Fluid and Salt Intake
Drinking more water is one of the simplest and most effective interventions for low blood pressure. In one study, drinking about 500 ml (roughly 16 ounces) of water raised systolic blood pressure by an average of 17 to 19 points within 30 minutes. That’s a significant jump from something you can do multiple times a day. Keeping a water bottle nearby and drinking consistently, rather than waiting until you’re thirsty, helps maintain blood volume throughout the day.
Salt plays an equally important role because sodium helps your body hold onto water. For people with orthostatic hypotension, medical guidelines recommend substantially more sodium than the general population gets. The American Society of Hypertension suggests 2,400 to 4,000 mg of sodium daily for people with low blood pressure, and some specialists recommend even higher amounts, up to 4,800 mg per day for conditions like POTS (postural orthostatic tachycardia syndrome). For context, the standard recommendation for the general population is under 2,300 mg. You can increase sodium through saltier foods, adding salt to meals, or sodium tablets. If your current sodium excretion is low, supplementing with 1,000 to 2,000 mg of sodium three times daily is a common starting point recommended by several health organizations.
Compression Garments
Compression stockings and abdominal binders work by physically preventing blood from pooling in your legs and abdomen when you stand. Johns Hopkins Medicine recommends starting with 20 to 30 mmHg pressure garments. If those feel too tight or hard to put on, step down to 15 to 20 mmHg. If they don’t feel like enough, you can try 30 to 40 mmHg.
Coverage matters more than most people realize. Waist-high stockings or leggings that compress both your legs and abdomen produce better results than knee-high socks alone. Some patients see the best results when they combine waist-high leg compression with an abdominal compression vest or shapewear. The key is reducing the amount of blood that settles in your lower body when gravity pulls it downward.
Adjust How and What You Eat
Blood pressure naturally drops after meals because your body diverts blood to your digestive system. For some people, this post-meal dip is steep enough to cause dizziness or fainting. If you notice symptoms after eating, two changes help the most: eating six smaller meals instead of three large ones, and reducing carbohydrates at each meal. Large, carb-heavy meals trigger the biggest blood pressure drops. Spreading your food intake across the day keeps the dips shallow.
Elevate the Head of Your Bed
Sleeping with your head slightly raised can reduce the severity of morning blood pressure drops. The recommended angle is about 10 degrees, which translates to roughly a 9-inch elevation at the head of the bed. You can achieve this with a wedge pillow or by placing blocks under the legs at the head of your bed frame. This position helps your body maintain its blood pressure regulation overnight, so there’s less of a dramatic shift when you get up in the morning.
Check Whether Your Medications Are the Problem
A surprising number of common medications can cause or worsen low blood pressure, and this is one of the most frequent culprits that gets overlooked. The list goes well beyond blood pressure pills:
- Diuretics (water pills): Both loop and thiazide types reduce blood volume and are a major cause of drug-related blood pressure drops.
- Prostate medications: Alpha-blockers prescribed for enlarged prostate (tamsulosin, terazosin, doxazosin) reduce vascular resistance and commonly cause lightheadedness on standing.
- Antidepressants: Older tricyclic antidepressants are well-known offenders, but SSRIs and SNRIs like sertraline, fluoxetine, and venlafaxine can also impair blood pressure regulation.
- Antipsychotics: Clozapine, quetiapine, and chlorpromazine carry high risk for orthostatic drops.
- Parkinson’s medications: Levodopa causes blood pressure drops through vasodilation.
- Opioid pain medications: Chronic use of opioids can decrease vascular resistance and lower blood pressure.
- Benzodiazepines: These anti-anxiety medications independently increase blood pressure drops on standing, likely through muscle relaxation and reduced nervous system tone.
- Heart medications: Beta-blockers, calcium channel blockers, and nitrates all interfere with the body’s ability to compensate when you stand.
If you started experiencing low blood pressure symptoms after beginning a new medication, or if you take several drugs from this list, a medication review with your prescriber could identify a straightforward fix. Sometimes adjusting the dose or timing of a single medication resolves the problem entirely.
Prescription Medications for Low Blood Pressure
When lifestyle measures aren’t enough, several prescription options can help. One type works by tightening blood vessels directly, raising blood pressure through increased resistance in your circulatory system. Another works more like a volume expander: it causes your kidneys to hold onto more sodium and water, increasing the total amount of fluid in your bloodstream. A third option raises levels of a chemical messenger that naturally constricts blood vessels and is sometimes used when low blood pressure is linked to nervous system disorders.
Your doctor’s choice among these depends on what’s driving your low blood pressure. Someone whose blood vessels don’t constrict properly needs a different approach than someone who simply doesn’t have enough fluid volume. Medications are typically added on top of the lifestyle changes described above, not as a replacement for them.
Warning Signs That Need Urgent Attention
Low blood pressure that causes occasional mild dizziness when you stand up too fast is common and usually manageable. But certain symptoms suggest something more serious is happening. Confusion, blurred vision, fainting, cold or clammy skin, rapid shallow breathing, or a weak and rapid pulse alongside low blood pressure readings can indicate that your organs aren’t getting enough blood flow. A sudden, significant drop in blood pressure, particularly after an injury, allergic reaction, or infection, requires emergency care.