For POTS, the sodium gap between drinks is huge: a cup of sports drink carries about 110 mg, while one bouillon cube supplies roughly 1,270 mg.
For the full breakdown, see our best Drinks for POTS guide.
Sodium, in milligrams per serving, is the number that separates a drink supporting a POTS fluid plan from one delivering mostly sugar, dye, and marketing. It’s the only honest basis for sorting high-sodium drinks for POTS, because the daily target comes from a clinician and the bottle follows from it. Three things decide the outcome: the sodium number on the panel, the sugar and caffeine around it, and whether a clinician has cleared a high-sodium plan at all.
Do High-Sodium Drinks Help POTS Symptoms?
Yes. For many people with POTS, extra sodium paired with extra fluid raises circulating blood volume and eases lightheadedness on standing. The amount depends on blood pressure, kidney function, and medications.
PoTS UK suggests 2–3 liters of fluid daily for adults and often 6–10 grams of added salt (6 grams is about one level teaspoon). Cleveland Clinic’s POTS overview describes sodium raised to 3,000–10,000 mg a day for hypovolemic POTS, alongside 2 to 2.5 liters of fluid, with water named as the best beverage and alcohol advised against.
Salt and sodium are not the same unit. Sodium chloride runs roughly 39% sodium by weight, so a 6-gram salt goal supplies about 2,300 mg of sodium. Never swap one number for the other.
How Much Sodium Is In Each Drink?
Sodium per cup ranges from zero in flavored water to about 1,270 mg in a chicken bouillon cube, so portion size tells you more than drink category. Figures are approximate and brand-dependent.
| Drink | Serving | Sodium (Approximate) |
|---|---|---|
| Chicken bouillon cube | 1 cube | ~1,270 mg |
| Pickle juice | 8 fl oz | ~1,000 mg |
| Tomato juice | 1 cup | ~640 mg |
| Oral rehydration solution | 1 cup | ~250 mg |
| Coconut water | 1 cup | ~250 mg |
| Tomato juice, low sodium | 1 cup | ~140 mg |
| Sports drink | 1 cup | ~110 mg |
| Milk | 1 cup | ~110 mg |
| Flavored water | 1 cup | 0 mg |
A conventional sports drink supplies about 110 mg per cup, thin cover for a four-digit daily target, while a single bouillon cube or a glass of pickle juice can match a full day of sports drinks. Comparing bottles one at a time gets old fast; our tested roundup of POTS drinks narrows the shelf to options that print sodium clearly per serving.
Buying High-Sodium Drinks For POTS: Reading The Label First
Milligrams of sodium per prepared serving comes first; everything else on the panel is context. Oral rehydration solutions are built for fluid-and-sodium replacement; drinks sold for flavor, energy, or exercise refreshment often are not — and the label shows which is which.
- Sodium per bottle, not per scoop. A powder that looks strong per scoop may need two scoops to fill the bottle you drink.
- Check the serving size. A 20-ounce bottle listed as two servings doubles everything on the panel, sugar included.
- Read the sugar and potassium load. Oral rehydration solutions and electrolyte powders range from none to plenty, and potassium matters with certain medications.
- Rule out caffeine. Energy drinks are discouraged for POTS patients, and caffeine can worsen palpitations.
PoTS UK advises consulting a doctor before raising sodium or fluid intake if you have heart disease, kidney disease, or high blood pressure; heart failure, edema, and any sodium-restricted condition call for the same pause. No published source here pins down current prices or package sizes, so confirm the formulation on the manufacturer’s US product page before stocking up — products get reformulated.
Once a plan is set, raise sodium gradually and watch for swelling, quick weight gain, headaches, agitation, or climbing blood pressure. PoTS UK also mentions drinking about two glasses of cool fluid quickly when faint, worth asking about rather than copying outright. Sequence that works:
- Get a sodium and fluid target in writing, stated in milligrams of sodium rather than grams of salt.
- Match drink type to the gap: oral rehydration solution for routine use, bouillon or pickle juice for a fast top-up.
- Verify sodium per prepared serving on the current US Nutrition Facts panel before buying more than one.
- Pair every sodium increase with fluid, and track swelling, weight, and symptoms for your next appointment.
Common Questions
Is Table Salt A Reasonable Substitute For These Drinks?
Table salt supplies sodium cheaply — one level teaspoon holds roughly 2,325 mg — but it arrives without fluid or potassium, and it is easy to overshoot. Clinicians who recommend salt usually pair it with a fluid goal. Ask before swapping measured drinks for spoonfuls, especially if you take blood pressure medication.
Do Electrolyte Tablets Deliver Enough Sodium On Their Own?
Usually not much. They are convenient for sipping through the day, but a clinician-set target in the thousands of milligrams needs food, bouillon, or a concentrated mix to reach it.
Which Warning Signs Mean Sodium Or Fluid Is Out Of Balance?
Swelling in the legs or hands, rapid weight gain over a day or two, new headaches, agitation, and rising blood pressure all point toward too much sodium or fluid. Stop increasing and call your clinician. Anyone with heart failure, kidney disease, or edema should not raise sodium without direction in the first place.
Sources
- Cleveland Clinic. “Postural Orthostatic Tachycardia Syndrome (POTS)” Supports the 3,000–10,000 mg sodium and 2–2.5 L fluid figures for hypovolemic POTS.
- PoTS UK. “Diet and Fluids” Supports adult fluid and salt targets, salt per electrolyte serving, and the medical caution list.
- Dysautonomia International. “The Essentials of POTS Treatment” (PDF) Supports the 2–3 L fluid and 10–12 g sodium expert ranges and the teaspoon-of-salt conversion.