The best salt substitute for high blood pressure is potassium-enriched salt, which replaces a portion of sodium chloride with potassium chloride. This single swap lowers systolic blood pressure by about 5.6 points and diastolic by about 2.9 points on average. That effect is even stronger in people who already have hypertension, where systolic drops average 5.7 points. Beyond potassium salt, several other strategies can reduce sodium in your cooking without sacrificing flavor.
Why Potassium-Enriched Salt Works
Regular table salt is nearly pure sodium chloride. Potassium-enriched salt substitutes replace roughly 25% of that sodium chloride with potassium chloride. This does two things at once: it cuts the sodium entering your body and increases your potassium intake. Sodium raises blood pressure by pulling water into your blood vessels, increasing the volume your heart has to pump. Potassium works in the opposite direction, helping your kidneys flush out excess sodium and relaxing blood vessel walls.
The most widely studied formulation is 75% sodium chloride and 25% potassium chloride. The World Health Organization now recommends this type of salt as a healthier alternative, and clinical guidelines suggest it for all patients with hypertension who don’t have specific contraindications. You’ll find these products labeled as low-sodium salt, potassium salt, heart salt, mineral salt, or sodium-reduced salt, depending on the brand and country.
The blood pressure benefits are most pronounced in people who already have high blood pressure. In people with normal blood pressure, the reduction is smaller and less consistent, averaging about 2.7 points systolic. So if you’ve been diagnosed with hypertension or prehypertension, this swap is one of the simplest dietary changes you can make.
Who Should Avoid Potassium Salt
Potassium-enriched salt is not safe for everyone. Too much potassium can cause dangerous heart rhythm problems in people whose kidneys can’t clear it efficiently. You should avoid potassium-based salt substitutes if you have advanced kidney disease, take potassium-sparing diuretics, or already use potassium supplements. Some guidelines also flag caution for people taking ACE inhibitors or angiotensin receptor blockers, both common blood pressure medications that can raise potassium levels on their own.
If any of those apply to you, the herb and spice strategies described below are a better path to cutting sodium.
MSG: A Surprisingly Useful Option
Monosodium glutamate contains about one-third the sodium of table salt by weight. Replacing half a teaspoon of salt with the same amount of MSG cuts sodium in that dish by roughly 37% while preserving the savory, satisfying flavor most people associate with salt. MSG works especially well in soups, stir-fries, marinades, and sauces where you want depth of flavor without reaching for the salt shaker.
Despite decades of controversy, large reviews have not confirmed that MSG causes the headaches or other symptoms once attributed to it in typical amounts used in cooking. For people who need to limit potassium as well as sodium, MSG offers an alternative that potassium-enriched salt cannot.
Herbs, Spices, and Acid
Herbs and spices don’t lower blood pressure directly the way potassium does, but they make low-sodium food taste good enough that you actually stick with it. The National Kidney Foundation recommends a long list of sodium-free flavor boosters, and learning which ones pair with which foods makes a real difference in the kitchen.
For beef and red meat, try rosemary, thyme, mustard powder, or allspice. Chicken and poultry pair well with sage, tarragon, ginger, and curry blends (check the label for salt-free versions). Fish responds well to dill, basil, lemon pepper, or bay leaf. For vegetables, reach for basil, marjoram, savory, or paprika. Pre-mixed blends like Italian seasoning, Cajun seasoning, fajita seasoning, and Chinese five spice can replace the generic “season with salt and pepper” step in most recipes, as long as you verify they don’t contain added sodium.
Acids are another powerful tool. Fresh lemon juice, lime juice, and vinegar brighten food in a way that tricks your palate into perceiving more saltiness than is actually there. A squeeze of lemon on steamed vegetables or a splash of vinegar in a soup just before serving can compensate for a surprising amount of missing salt. Fresh garlic and onion add complexity that further reduces the need for sodium.
One practical tip: crush dried leafy herbs between your fingers before adding them to release their essential oils. Because salt amplifies other flavors, you may need slightly more of a spice than a standard recipe calls for when cooking low-sodium.
Coconut Aminos for Sauces and Marinades
If soy sauce is a staple in your cooking, switching to coconut aminos is one of the easiest sodium reductions you can make. A tablespoon of regular soy sauce contains about 920 mg of sodium. Reduced-sodium soy sauce still has around 575 mg. Coconut aminos drops that to roughly 270 mg per tablespoon. That’s still not negligible, so it’s worth measuring rather than pouring freely, but the swap cuts sodium by more than 70% compared to regular soy sauce.
Sea Salt Is Not a Substitute
A common misconception is that sea salt, Himalayan pink salt, or other “natural” salts are lower in sodium than regular table salt. They are not. Sea salt and table salt contain comparable amounts of sodium by weight. The trace minerals in specialty salts exist in amounts too small to affect your health. Switching from table salt to sea salt does nothing to lower your blood pressure.
How Much Sodium to Aim For
The American Heart Association recommends no more than 2,300 mg of sodium per day, with an ideal target of 1,500 mg for most adults. The average American consumes well over 3,000 mg daily. Simply cutting 1,000 mg per day can measurably improve blood pressure and heart health.
Most of that excess sodium comes from processed and restaurant foods, not the salt shaker at home. So while switching to a potassium-enriched salt and cooking with herbs helps, checking labels on bread, canned soups, deli meats, frozen meals, and condiments often makes a bigger dent. A combined approach, reducing processed food sodium and using better substitutes at home, is the most effective strategy for getting your numbers down.