How to Raise Low Blood Pressure: Foods, Fluids and Habits That Help
Last updated: September 2026
If standing up leaves you swaying and grey-visioned, you have probably already searched for something to eat or drink that fixes it. The honest answer is that no single food raises blood pressure much. What works is a stack of small things — fluid volume, salt if your doctor agrees, meal size, posture habits and compression — each worth a few mmHg, and together often enough to stop the symptoms.
This page is the practical half. If you want the definition, the causes and the warning signs, read low blood pressure explained first.
First, is it the harmless kind?
Low blood pressure is conventionally a reading below 90/60 mmHg. Unlike high blood pressure, a low number on its own is not a diagnosis and not a risk to treat: plenty of fit people, and plenty of younger women, sit at 90/60 for life and feel fine. If you have no symptoms, there is nothing on this page you need to do.
This guide is for the other group: people whose low readings come with dizziness on standing, faintness, greying vision, fatigue, or a slump after meals. The pattern that matters most is a drop of roughly 20 mmHg systolic or 10 mmHg diastolic within three minutes of standing — orthostatic hypotension — worth mentioning to a doctor, especially over 65, because of fall risk.
Two things override everything below. If low readings started after a medication change, the fix is usually the medication, not your diet. And sudden severe drops from bleeding, serious infection or a severe allergic reaction are emergencies: confusion, cold clammy skin, a weak fast pulse or rapid shallow breathing means call emergency services, not a glass of salty water.
What to do right now when you feel faint
The immediate goal is to get blood back to your head and keep you from falling.
- Sit or lie down straight away. Lying flat with your legs raised above heart level works fastest. Sitting with your head between your knees is the fallback when there is nowhere to lie.
- Drink water. A large glass — around 500 ml — measurably raises blood pressure in people with autonomic problems, and the effect starts within about 15 minutes.
- Use counter-manoeuvres if you cannot lie down. Cross your legs and squeeze them together, tense your thighs and buttocks, or squat. These push pooled blood out of your legs, and work best started the moment symptoms begin rather than after the room goes dim.
- Do not stand back up too soon. Wait until vision and steadiness are fully back, then rise in stages.
If you actually fainted, if it happened during exercise or while lying down, or if it came with chest pain, breathlessness or an irregular heartbeat, get medical attention — those patterns point at the heart, not simple pooling.
Foods and drinks that help, and their caveats
Nothing here is dramatic on its own. Fluids and salt do most of the work; the rest is about avoiding the things that make the drops worse.
| What | Why it helps | Caveat |
|---|---|---|
| Water and other fluids | More circulating volume means higher pressure. Aim for roughly 2-3 litres a day, more in heat, illness or around exercise; a large glass drunk quickly gives a short bump. | Not if you have been told to restrict fluid for heart or kidney reasons. Thirst is a poor guide over 65 — go by schedule, not by feel. |
| Salt | Sodium holds water in the bloodstream, so extra salt raises volume and pressure. This is the one condition where a doctor may deliberately suggest more of it. | Ask first, and do not self-prescribe. Extra salt is genuinely risky with heart failure, kidney disease or existing hypertension — the reasoning is the exact reverse of foods that lower blood pressure. |
| Smaller, more frequent meals | After a large meal, blood diverts to digestion and pressure can dip for an hour or two; five or six small meals spread the load. | Cut back on refined carbohydrates — white bread, pastries, sugary drinks — which produce the sharpest post-meal drops, and rest a while after eating. |
| Caffeine | Coffee or strong tea causes a real, short-lived rise — useful in the morning or before a known bad patch. | It lasts hours, not all day, and fades as tolerance builds. Late caffeine costs you sleep, which worsens the fatigue. |
| B12 and folate sources | Deficiency in either causes anaemia, which lowers blood pressure. Meat, fish, eggs, dairy and fortified cereals cover B12; leafy greens, beans and lentils cover folate. | This only helps if you are actually deficient. It is a blood test, not a guess — and a vegan diet without a B12 supplement is the common case. |
| Licorice | Real licorice root contains glycyrrhizin, which acts on the same hormonal pathway as salt retention and does reliably raise blood pressure. | Treat it as a drug, not a sweet: it can push potassium dangerously low and cause heart rhythm problems, and it interacts with several medications. Most sweets sold as licorice contain anise flavouring and no glycyrrhizin at all. |
| Alcohol | Nothing — it works against you. Alcohol dilates vessels and dehydrates, so it lowers pressure and worsens dizziness. | Best avoided while symptoms are being sorted out; at minimum, never on an empty stomach or in the heat. |
Notice what is missing: there is no superfood. The gains come from volume and timing.
Habits that keep readings up through the day
These cost nothing and, for most people with symptomatic low pressure, do more than any change to the shopping list.
| Habit | How to do it | Worth knowing |
|---|---|---|
| Rise in stages | Sit on the edge of the bed for 30 seconds, flex your ankles and calves, then stand — holding something solid for the first few seconds. | The riskiest moments are getting out of bed in the morning and standing after a long sit. Slow is the whole trick. |
| Raise the head of the bed 10-20 degrees | Blocks under the head-end legs, or a wedge under the mattress. Extra pillows do not work — they bend your neck, not your body. | Sleeping slightly head-up reduces overnight fluid loss and blunts the morning drop. |
| Compression stockings or an abdominal binder | Waist-high graduated compression beats knee-high, because most pooling happens in the abdomen and thighs. | Get sized properly, and check with a doctor first if you have circulation problems in your legs. |
| Avoid hot baths, saunas and long hot showers | Heat dilates vessels. Keep showers warm rather than hot, and sit down if you feel unsteady. | Same reasoning applies to hot weather generally — drink more on those days. |
| Break up long standing | Shift weight, cross and squeeze your legs, or step in place; sit down before you need to. | Standing still is harder on your circulation than walking. |
| Exercise, especially leg and core strength | Squats, calf raises, cycling and swimming build the muscle pump that returns blood from your legs. | Start gently. Avoid heavy straining and hold-your-breath lifts, and stand up slowly between sets. |
| Review your medications | Bring a full list, including anything over the counter, to your doctor or pharmacist. | Blood pressure drugs, diuretics, some antidepressants, Parkinson's medicines and drugs for erectile dysfunction all lower pressure, and a timing or dose change is often the entire fix. Never stop a prescribed drug on your own. |
When lifestyle measures are not enough
If you are hydrating, eating smaller meals, wearing compression and still fainting, that is the point to stop optimising at home and see a doctor.
The first move is almost always to look at what you already take, since so many common drugs lower blood pressure as a side effect. Adjusting a dose, changing the time of day it is taken, or swapping one medicine for another resolves a large share of cases outright.
Where that is not enough, doctors do prescribe medication to raise blood pressure — fludrocortisone, which makes the kidneys hold onto sodium and water, and midodrine, which tightens blood vessels, are the two most commonly used. They are named here so the terms are familiar if they come up in an appointment, not as something to seek out: both need supervision, both have real side effects, and fludrocortisone in particular can push blood pressure too high while you are lying down. A doctor will also want to rule out underlying causes — anaemia, thyroid or adrenal problems, heart rhythm disorders and autonomic conditions — before treating the number.
Track what actually works for you
Low blood pressure responds to different things in different people, and the changes are small enough that memory cannot judge them. Measurement settles it.
The most informative thing you can record is a lying-to-standing pair: take a reading after five minutes sitting or lying quietly, stand up, and take another after one minute and again after three. Write both numbers down. A drop of about 20 systolic or 10 diastolic is the threshold that has a name, and it is far more persuasive on paper than described from memory. Use good technique — same cuff, same arm, feet flat, arm supported at heart level — as covered in how to measure blood pressure at home.
Alongside the numbers, note the context that explains them: what you ate and when, how much you drank, the time of day, and every dizzy spell. Post-meal dips, a morning trough or a medication-timing effect all show up within a week or two, and two weeks of paired readings is usually enough to tell whether the compression stockings earned their place. The 7-day blood pressure log gives you a structure to fill in, on paper or on screen.
Blood Pressure Journal is built for exactly this kind of record: each reading takes a few seconds to capture, and a note attached to it — "stood up too fast," "after lunch," "first day in stockings" — is what turns a column of numbers into something you and your doctor can actually read.
Frequently asked questions
What should I eat when my blood pressure is low?
There is no food that raises blood pressure much on its own. What helps is fluid and salt — drink 2-3 litres a day unless you have been told to restrict fluids, and ask your doctor whether extra salt is appropriate for you. Beyond that, eat smaller, more frequent meals with fewer refined carbohydrates, since large starchy meals cause the sharpest post-meal drops, and make sure you are not short on B12 or folate, because anaemia lowers blood pressure.
Does salt raise blood pressure quickly?
Sodium raises blood pressure by holding water in the bloodstream, so the effect follows fluid volume — it builds over hours to days rather than acting like a rescue measure. For a sudden dizzy spell, lying down with your legs up and drinking a large glass of water works faster. Do not add salt on your own initiative: it is genuinely dangerous with heart failure, kidney disease or existing high blood pressure, so it needs a doctor's agreement.
Does coffee raise low blood pressure?
Yes, temporarily. Caffeine produces a real but short-lived rise, which is why a morning coffee can help if your worst symptoms are early in the day. Two limits: the effect fades as you build tolerance with regular use, and caffeine late in the day costs you sleep, which makes the fatigue side of low blood pressure worse.
How can I raise my blood pressure immediately?
Sit or lie down at once and raise your legs above heart level — that is the fastest thing available to you. Drink a large glass of water; around 500 ml has a measurable effect within roughly 15 minutes. If you cannot lie down, cross your legs and squeeze, tense your thighs and buttocks, or squat, which pushes pooled blood back out of your legs. Stand up again only once your vision and balance are fully back.
Is low blood pressure dangerous in young people?
Usually not. A steady reading around 90/60 without symptoms is common in fit young adults and in younger women, and it needs no treatment. What matters is symptoms and sudden change: repeated fainting, fainting during exercise or while lying down, or a low reading that appears alongside chest pain, breathlessness or an irregular heartbeat all need checking. A sudden severe drop from bleeding, infection or a severe allergic reaction is an emergency at any age.
Which fruits are good for low blood pressure?
Honestly, no fruit raises blood pressure — that is a myth worth dropping. Hydration and salt are what move the number, so water-rich fruit helps only to the extent that it is fluid. You do not need to avoid potassium-rich fruit like bananas or oranges either: the potassium advice belongs to people trying to *lower* their pressure, and normal fruit intake will not make low blood pressure worse.
